Radiation air conditioning system

Abstract

A radiation air conditioning system (100) is provided with: a plurality of blow-out nozzles (13) having blow-out slits (22); a radiant heat generation device (31) having a plurality of hot and cold water radiant tubes (32) for generating heat radiation by passing water therethrough; and a control unit for controlling the fan. The plurality of blow-out nozzles (13) are arranged side by side with a gap such that the respective blow-out slits (22) are located on the same plane. Each of the plurality of hot and cold water radiant tubes (32) is disposed so as to generate heat transfer with the guide air guided by the blow-out air blown from the blow-out nozzle (13). When controlling the temperature of the water passing through the plurality of hot and cold water radiant tubes (32) under predetermined conditions, the control unit controls the volume of the blown air so as to approach a set temperature set in the air-conditioned space (1) on the basis of the air conditioning capability determined within the controllable range of the volume of the fan.

Description

Technical Field

[0001] The present invention relates to a radiant air-conditioning system for air-conditioning an interior using the radiant heat of water. Background Art

[0002] As a prior art, there is known a radiant air-conditioning system using a radiant panel, in which a plurality of tubes through which a heat medium such as cold and hot water flows are buried in the panel, and the interior or the like is air-conditioned by thermal radiation (for example, Patent Document 1).

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: Japanese Patent Laid-Open No. 7-19533 Summary of the Invention

[0006] Technical Problem to be Solved by the Invention

[0007] In the existing radiant air-conditioning system, almost no convective heat transfer is generated by the air circulating in the space, so it is not possible to utilize the object generating cooling heat to cool the space, and the comfort cannot be improved. Also, in the existing radiant air-conditioning system, as an air-conditioning capacity control unit for air-conditioning the space, there is a problem that there is a method of controlling only the temperature of the refrigerant flowing in the tube or only the flow rate.

[0008] The present invention is for solving the above-mentioned existing problems, and provides a radiant air-conditioning system capable of improving the thermal comfort of a space while controlling the air-conditioning capacity even in a state where the temperature and flow rate of the refrigerant flowing in the tube are constant.

[0009] The radiant air-conditioning system of the present invention includes: a plurality of blowing nozzles having slit-shaped blow-out ports; a blower that supplies air to the plurality of blowing nozzles; a radiant heat generation unit having a plurality of tubes that generate thermal radiation to the space to be air-conditioned by passing water therethrough; and a control unit that controls the blower. The plurality of blowing nozzles are arranged side by side with gaps such that their respective blow-out ports are on the same plane. The guiding air guided by the blown air blown from the plurality of blowing nozzles passes through the gaps, and the plurality of tubes are respectively arranged so as to generate heat transfer with the guiding air. The control unit controls the flow rate of the blown air so as to approach the set temperature set for the space to be air-conditioned based on the air-conditioning capacity determined within the controllable range of the air volume of the blower when controlling the temperature of the water passing through the plurality of tubes under specified conditions.

[0010] According to the present invention, it is possible to provide a radiant air-conditioning system capable of improving the thermal comfort of a space while controlling the air-conditioning capacity even in a state where the temperature and flow rate of the refrigerant flowing in the tube are constant. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 FIG. 1 is a perspective view showing the basic structure of the radiant air conditioning system according to the first embodiment of the present invention.

[0012] Figure 2 FIG. 2 is a side view showing the overall configuration of the radiant air conditioning system.

[0013] Figure 3 FIG. 3 is a perspective view showing the installation image of the air supply device in the radiant air conditioning system.

[0014] Figure 4 FIG. 4 is a top view showing the flow direction of the air inside the air supply device.

[0015] Figure 5 FIG. 5 is a schematic connection diagram showing the connection relationship between the cold and hot water pipes of the radiant heat generation device and the cold and hot water generation device in the radiant air conditioning system.

[0016] Figure 6A FIG. 6 is a perspective view showing the arrangement relationship between the blowing nozzle and the cold and hot water radiant pipes constituting the radiant air conditioning system.

[0017] Figure 6B FIG. 7 is a cross-sectional view showing the arrangement relationship between the blowing nozzle and the cold and hot water radiant pipes constituting the radiant air conditioning system.

[0018] Figure 7 FIG. 8 is a structural diagram showing the arrangement relationship between the blowing nozzle of the air supply device and the cold and hot water radiant pipes of the radiant heat generation device constituting the radiant air conditioning system.

[0019] Figure 8 FIG. 9 is a cross-sectional view showing the flow direction of the blown air from the blowing nozzle of the air supply device and the guiding air generated near the cold and hot water radiant pipes.

[0020] Figure 9 FIG. 10 is a flowchart showing the control steps based on the air volume of the air supply device of the radiant air conditioning system.

[0021] Figure 10A FIG. 11 is a perspective view showing the arrangement relationship between the blowing nozzle and the cold and hot water radiant pipes constituting the radiant air conditioning system of the first modified example.

[0022] Figure 10B FIG. 12 is a cross-sectional view showing the arrangement relationship between the blowing nozzle and the cold and hot water radiant pipes constituting the radiant air conditioning system of the first modified example.

[0023] Figure 11A FIG. 13 is a perspective view showing the arrangement relationship between the blowing nozzle and the cold and hot water radiant pipes constituting the radiant air conditioning system of the second modified example.

[0024] Figure 11BIt is a cross-sectional view showing the arrangement relationship between the blowout nozzles and the cold and hot water radiation pipes that make up the radiation air-conditioning system of the second modification example.

[0025] Figure 11C It is a side view showing the arrangement relationship between the blowout nozzles and the cold and hot water radiation pipes that make up the radiation air-conditioning system of the second modification example.

[0026] Figure 12 It is a perspective view showing the basic structure of the radiation air-conditioning system of the second embodiment of the present invention.

[0027] Figure 13 It is a side view showing the overall arrangement of the radiation air-conditioning system.

[0028] Figure 14 It is a perspective view showing the installation image of the air supply device in the radiation air-conditioning system.

[0029] Figure 15A It is a perspective view showing the arrangement relationship between the blowout nozzles and the cold and hot water radiation pipes that make up the radiation air-conditioning system.

[0030] Figure 15B It is a cross-sectional view showing the arrangement relationship between the blowout nozzles and the cold and hot water radiation pipes that make up the radiation air-conditioning system.

[0031] Figure 16 It is a schematic connection diagram showing the connection relationship between the cold and hot water radiation pipes of the radiation heat generation device and the cold and hot water generation device in the radiation air-conditioning system.

[0032] Figure 17 It is a top view showing the flow direction of the air inside the air supply device.

[0033] Figure 18 It is a cross-sectional view showing the flow direction of the blown air from the blowout nozzles of the air supply device and the guiding air generated near the cold and hot water radiation pipes.

[0034] Figure 19A It is a cross-sectional view showing a modification example of the arrangement state of the cold and hot water radiation pipes inside the blowout nozzles.

[0035] Figure 19B It is a cross-sectional view showing a modification example of the arrangement state of the cold and hot water radiation pipes inside the blowout nozzles.

[0036] Figure 19C It is a cross-sectional view showing a modification example of the arrangement state of the cold and hot water radiation pipes inside the blowout nozzles.

[0037] Figure 19D It is a cross-sectional view showing a modification example of the arrangement state of the cold and hot water radiation pipes inside the blowout nozzles.

[0038] Figure 19EIt is a cross-sectional view showing a modified example of the arrangement state of the cold and hot water radiation pipes inside the blowing nozzle.

[0039] Figure 19F It is a cross-sectional view showing a modified example of the arrangement state of the cold and hot water radiation pipes inside the blowing nozzle.

[0040] Figure 19G It is a cross-sectional view showing a modified example of the arrangement state of the cold and hot water radiation pipes inside the blowing nozzle. Detailed implementation mode

[0041] The radiant air-conditioning system of the present invention includes: a plurality of blowing nozzles having slit-shaped air outlets; a blower that supplies air to the plurality of blowing nozzles; a radiant heat generation unit having a plurality of pipes that generate heat radiation to the air-conditioned space by allowing water to pass through inside; and a control unit that controls the blower. The plurality of blowing nozzles are arranged side by side with gaps in such a way that their respective air outlets are located on the same plane. The guiding air guided by the blowing air sent from the plurality of blowing nozzles passes through the gaps. The plurality of pipes are respectively arranged in such a way as to generate heat transfer with the guiding air. The control unit controls the temperature of the water passing through the plurality of pipes under specified conditions, and based on the air-conditioning capacity determined within the controllable range of the air volume of the blower, controls the air volume of the blowing air so as to approach the set temperature set for the air-conditioned space.

[0042] According to such a structure, the air (guiding air) guided to the gaps of the plurality of blowing nozzles exchanges heat with the surface of the radiant heat generation unit located near the blowing nozzles, and becomes integrated with the blowing air from the blowing nozzles, and thus is sent to the air-conditioned space as a planar uniform flow with a low wind speed. And since the guiding air generally has a larger air volume than the blowing air, it is structured such that the radiant heat generation unit exchanges heat more intensively with the guiding air than with the blowing air, and the heat conduction amount can be increased. Therefore, it is possible to achieve air conditioning that suppresses temperature deviation or air flow feeling in the entire air-conditioned space, and it is possible to achieve a space without unevenness in the perceived temperature. And even when controlling the temperature of the water passing through the plurality of pipes under specified conditions, the control unit that controls the blower also controls its operation within the controllable range of the air volume. Therefore, when the air volume is operated at a large value, the heat exchange in the radiant heat generation unit is promoted, and the heat conduction amount can be increased. In addition, when the air volume is operated at a small value, the heat exchange in the radiant heat generation unit can be suppressed, and the heat conduction amount can be reduced. Therefore, the radiant air-conditioning system can control the air-conditioning capacity with respect to the air-conditioned space even while keeping the temperature of the water passing through the plurality of pipes constant, so the settable temperature range of the air-conditioned space can be expanded. That is, it is possible to control the air-conditioning capacity while keeping the temperature and flow rate of the refrigerant flowing through the pipes constant, and improve the thermal comfort of the space.

[0043] In addition, the radiant air conditioning system of the present invention may further include: a set temperature input unit for inputting a set temperature; and a temperature detection unit for detecting the temperature of the air-conditioned space. The control unit can control the air volume of the blown air in such a way that the temperature difference between the set temperature input to the set temperature input unit and the temperature detected by the temperature detection unit is within the range of a reference value.

[0044] By forming such a structure, compared with controlling the air conditioning capacity by changing the temperature of the water passing through multiple pipes, the air conditioning capacity can be controlled more immediately.

[0045] In addition, in the radiant air conditioning system of the present invention, the specified condition may be a temperature condition that is higher than the temperature of the water that causes condensation on the surface of the radiation surface formed by multiple pipes by a specified temperature.

[0046] Thereby, the risk of condensation on the surface of the radiation surface formed by multiple pipes can be further reduced, and the dripping of water into the air-conditioned space can be suppressed.

[0047] In addition, the multiple pipes may be arranged in contact with the outside of the side members constituting each of the multiple blowing nozzles.

[0048] According to such a structure, the guiding air guided by the blown air blown from the blowing nozzle can be more intensively heat-exchanged, and the temperature can be transmitted to the blowing nozzle itself by heat conduction, increasing the radiation area.

[0049] In addition, the multiple pipes may be arranged in contact with the inside of the side members constituting each of the multiple blowing nozzles.

[0050] According to such a structure, a structure can be further realized in which the heat conduction effect on the blown air blown from the blowing nozzle is increased and the air conditioning capacity of the air-conditioned space is improved.

[0051] In addition, in the radiant air conditioning system of the present invention, the multiple pipes are built into the side members constituting each of the multiple blowing nozzles.

[0052] Thereby, when manufacturing the blowing nozzle, there is no need to separately manufacture and install the pipes, and the blowing nozzle with built-in pipes can be manufactured by only manufacturing the side members. Therefore, the blowing nozzle can be simply manufactured at a lower cost. And by building in the pipes, the heat conduction of the blowing nozzle is further promoted. Therefore, heat radiation is performed with a human body or the like arranged in the air-conditioned space, and the thermal comfort felt by the people living in the air-conditioned space can be further improved.

[0053] In addition, the multiple pipes may be arranged on the same plane on the downstream side of the plane formed by the blow-out ports of each of the multiple blowing nozzles with respect to the flow of the blown air.

[0054] With such a structure, it is possible to further prevent multiple pipes from being blocked by the blowing nozzles and expose them in the conditioned space, promoting heat exchange between the blown air and the guided air.

[0055] In addition, the multiple pipes can also be arranged in a space formed in the gap between the multiple blowing nozzles.

[0056] With such a structure, since there are no obstacles between the multiple pipes and the conditioned space, heat radiation can be further promoted. Therefore, the thermal comfort based on heat radiation can be further improved.

[0057] In addition, the multiple blowing nozzles can also be arranged offset so as to have a predetermined guiding space with respect to the ceiling surface or the side wall surface of the conditioned space.

[0058] With such a structure, it is possible to further suck in the guided air over a large range from the guiding space between the ceiling surface or the side wall surface and the blowing nozzles, and achieve stable air supply toward the opposite floor surface or side wall surface.

[0059] In addition, the multiple blowing nozzles can each be made of aluminum.

[0060] With such a structure, it is also possible to realize a structure in which the blown air flowing inside the blowing nozzles and the air passing through the gaps between the multiple blowing nozzles can easily exchange heat with the pipes.

[0061] In addition, the multiple blowing nozzles can each be made of resin.

[0062] With such a structure, by further using a raw material with low thermal conductivity, heat conduction to the air can be suppressed, heat radiation from the pipes themselves can be increased, and thus the balance of the air conditioner can be adjusted.

[0063] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the following embodiments are examples of embodying the present invention and do not limit the technical scope of the present invention. In addition, the drawings described in the embodiments are schematic drawings, and the ratios of the sizes and thicknesses of the respective components in each drawing do not necessarily reflect the actual size ratios.

[0064] (First Embodiment)

[0065] First, with reference to Figure 1 and Figure 2 , the radiant air conditioning system 100 of the first embodiment will be described.

[0066] Figure 1 is a perspective view showing the basic structure of the radiant air conditioning system 100 according to the first embodiment of the present invention. Figure 2 is a side view showing the overall configuration of the radiant air conditioning system 100.

[0067] In addition, in Figure 1 and Figure 2 , only the main devices and representative structures constituting the system are shown. Regarding the detailed structures of the respective devices, refer to Figure 3 The drawings after

[0068] will be described later in the text.

[0069] Specifically, as Figure 1 shown, the radiant air-conditioning system 100 is configured to have a blower device 11, a radiant heat generation device 31, a set temperature input unit 51, a temperature detection unit 52, and a control unit 19 (refer to Figure 3 ).

[0070] The blower device 11 is configured to include: blower nozzles 13a, 13b, 13c, 13d collectively referred to as the blowing nozzle 13; a blower box 14; a blower 15 (refer to Figure 2 ); and blowing slits 22a, 22b, 22c, 22d collectively referred to as the blowing slit 22.

[0071] The radiant heat generation device 31 is configured to include: cold and hot water radiant pipes 32a, 32b, 32c, 32d collectively referred to as the cold and hot water radiant pipe 32; a water supply pipe 33; a drain pipe 34; a cold and hot water generation cooler 35; a water supply pump 36; an outdoor unit 42; and a refrigerant circuit 43.

[0072] The radiant air-conditioning system 100 is installed in the conditioned space 1 which is part of a residence. Here, the conditioned space 1 refers to the space used by the occupant as a place for living inside, including the living room, dining room, bedroom, private room, or children's room, etc. In addition, it does not include spaces such as closets, cloakrooms, or mechanical rooms where the occupant does not move inside.

[0073] In addition, the conditioned space 1 forms a closed space formed by wall surfaces including the ceiling surface, the floor surface, and the side wall surfaces. However, in Figure 1 , in order to easily observe the configuration of the radiant air-conditioning system 100 installed inside the conditioned space 1, the side wall surface and the ceiling surface in front of the drawing are seen through and shown.

[0074] The blower box 14, the blowing nozzle 13 (blowing nozzles 13a, 13b, 13c, 13d) constituting the blower device 11, and the cold and hot water radiant pipe 32 (cold and hot water radiant pipes 32a, 32b, 32c, 32d) of the radiant heat generation device 31 are respectively arranged near the ceiling surface of the conditioned space 1.

[0075] The blower box 14 is a housing that incorporates equipment and air ducts required to supply the circulating air in the conditioned space 1 to the blowing nozzles 13 (blowing nozzles 13a, 13b, 13c, 13d).

[0076] Inside the blower box 14, there are multiple components including the blower 15, details of which will be described later. The blower box 14 is arranged in the conditioned space 1 in contact with the ceiling surface and the side wall surface on the depth side. In addition, in this embodiment, the blower box 14 is arranged in contact with the ceiling surface and the side wall surface on the depth side, but it is not necessarily required to be in contact from the inside of the conditioned space 1. For example, it can also be suspended from the ceiling surface or arranged inside the ceiling.

[0077] The chilled / hot water generation cooler 35 is a device for generating water used to produce the air-conditioning heat radiation in the conditioned space 1, including: a refrigerant coil 35a which is a mechanism for heating and cooling water inside; a tank for storing the water for heating and cooling; and a mechanism for controlling the water temperature. And the refrigerant coil 35a is connected to the outdoor unit 42 via a refrigerant circuit 43 through which the refrigerant flows.

[0078] The chilled / hot water generation cooler 35 is connected to the water supply pipe 33 and the drain pipe 34, and is configured such that the water passing through it comes into contact with the refrigerant coil 35a. That is, in the chilled / hot water generation cooler 35, by changing the temperature of the refrigerant coil 35a, the temperature of the water can be adjusted.

[0079] The water supply pipe 33 is a pipe for delivering the water whose temperature has been adjusted by the chilled / hot water generation cooler 35 to the chilled / hot water radiation pipe 32. The water supply pipe 33 is connected in sequence from the upstream side to the chilled / hot water generation cooler 35, the water supply pump 36, and the chilled / hot water radiation pipe 32.

[0080] The drain pipe 34 is a pipe for returning the water that has circulated in the chilled / hot water radiation pipe 32 back to the chilled / hot water generation cooler 35. The drain pipe 34 is connected in sequence from the upstream side to the chilled / hot water radiation pipe 32 and the chilled / hot water generation cooler 35.

[0081] The water supply pump 36 is a pump that generates the flow of the water for heating and cooling delivered to the chilled / hot water radiation pipe 32.

[0082] In addition, in this embodiment, the water supply pipe 33, the drain pipe 34, the chilled / hot water generation cooler 35, and the water supply pump 36 are arranged in the conditioned space 1, but they can also be arranged outside the conditioned space 1 beyond the ceiling surface, floor, and side wall surfaces that make up the conditioned space 1, and arranged at any position that does not interfere with the living space, without affecting the functions and effects of the present invention.

[0083] The outdoor unit 42 is an outdoor unit installed in an outdoor space and has a heat pump 44 composed of a compressor 42a, an expander 42b, an outdoor heat exchanger 42c, a blower fan 42d, and a four-way valve 42e. As the outdoor unit 42, an outdoor unit with a common structure is used, so the detailed description of each device (compressor 42a, expander 42b, outdoor heat exchanger 42c, blower fan 42d, and four-way valve 42e) is omitted.

[0084] The heat pump 44 is connected to the refrigerant coil 35a via a refrigerant circuit 43, and the outdoor unit 42 adjusts the temperature of the refrigerant flowing in the refrigerant coil 35a by controlling the heat pump 44.

[0085] The refrigerant coil 35a functions as an absorber or a radiator in a refrigeration cycle including a compressor, a radiator, an expander, and an absorber, and is configured to absorb heat (cool) or dissipate heat (heat) when the refrigerant introduced from the outdoor unit 42 flows inside.

[0086] Since a four-way valve 42e is connected in the refrigeration cycle including the refrigerant coil 35a, in the cold and hot water generating cooler 35, it is possible to switch between a cooling mode state in which the refrigerant flows in the first direction through the four-way valve 42e to cool the water, and a heating mode state in which the refrigerant flows in the second direction through the four-way valve 42e to heat the water.

[0087] Here, the first direction is the direction in which the refrigerant flows in the order of the compressor 42a, the outdoor heat exchanger 42c, the expander 42b, and the refrigerant coil 35a. In addition, the second direction is the direction in which the refrigerant flows in the order of the compressor 42a, the refrigerant coil 35a, the expander 42b, and the outdoor heat exchanger 42c. In the refrigerant coil 35a, the introduced water can be cooled or heated.

[0088] A plurality of blow nozzles 13 (blow nozzles 13a, 13b, 13c, 13d) serve to blow the air sent by the blower 15 (blower 15a, 15b, refer to Figure 3 ) into the air-conditioned space 1, and are respectively substantially rectangular parallelepiped-shaped (including rectangular parallelepiped-shaped) components having blow slits 22 (blow slits 22a, 22b, 22c, 22d).

[0089] In the present embodiment, all of the blow nozzles 13a, 13b, 13c, 13d have the same shape. The plurality of blow nozzles 13a, 13b, 13c, 13d are respectively as Figure 1 shown, one of the two surfaces with the smallest cross-sectional area among the six surfaces is in contact with the blower box 14, and the blow nozzles 13 (blow nozzles 13a, 13b, 13c, 13d) and the blower box 14 communicate with each other via holes through which air passes.

[0090] In addition, the other one of the two faces with the smallest cross-sectional area among the six faces contacts the side wall surface of the air-conditioned space 1 (the front side wall surface opposite to the depth side wall surface in contact with the blower box 14).

[0091] In addition, the four faces other than the two faces with the smallest cross-sectional area among the six faces do not contact the blower box 14, the ceiling surface of the air-conditioned space 1, and the adjacent blowing nozzles 13 (for example, the blowing nozzles 13a and 13b), and are arranged in a state where the air occupying the air-conditioned space 1 can pass through the periphery of the blowing nozzles 13. In the present embodiment, the space through which the air around the blowing nozzles 13 communicating with the air-conditioned space 1 passes is defined as the guiding space 2.

[0092] In addition, all of the blowing slits 22a, 22b, 22c, and 22d are located on the same plane substantially parallel to the ceiling surface. That is, the blowing slits 22 sides of the blowing nozzles 13a, 13b, 13c, and 13d are arranged side by side with gaps in a manner of being located on the same plane to form a blowing surface.

[0093] Regarding the detailed element arrangement and the like of the other air supply device 11, refer to Figure 3 and Figure 4 described later.

[0094] The cold and hot water radiant pipes 32 (the cold and hot water radiant pipes 32a, 32b, 32c, and 32d) are hollow members for changing the temperature of the air inside the air-conditioned space 1 or generating heat radiation between the wall surface constituting the air-conditioned space 1 and the objects (such as furniture or human bodies) existing inside the air-conditioned space 1, and are configured to allow water to pass through therein. Each of the cold and hot water radiant pipes 32 (the cold and hot water radiant pipes 32a, 32b, 32c, and 32d) is made of the same material, and it is particularly preferable to use a raw material with a high emissivity such as resin on its surface, but other raw materials can also be used instead.

[0095] In addition, regarding the detailed connection relationship between the cold and hot water radiant pipes 32, the water supply pipe 33, and the drain pipe 34 and other details of the other radiant heat generating device 31, refer to Figure 5 described later.

[0096] The set temperature input unit 51 is provided as an operation panel on the wall surface constituting the air-conditioned space 1 in such a manner that the user can set the temperature of the living space, and is configured to transmit the desired temperature input by the user to the control unit 19 via a communication line (refer to Figure 3 ). The set temperature input unit 51 and the control unit 19 can be connected via a communication line, but can also be configured to be able to communicate wirelessly.

[0097] The temperature detection unit 52 is a temperature sensor provided in the living space to detect the temperature of the air-conditioned space 1 at a certain moment, and is configured to be connected to the control unit 19 via a communication line to send the detected temperature to the control unit 19. The temperature detection unit 52 and the control unit 19 can be connected via a communication line, but can also be replaced by a structure capable of communicating wirelessly.

[0098] The control unit 19 controls the blower 15 (refer to Figure 3 ). More specifically, the control unit 19 controls the temperature of the water passing through the plurality of cold and hot water radiant tubes 32 to be a specified condition. In this case, the control unit 19 controls the air volume of the blown air Q0 (refer to Figure 8 ) to be close to the set temperature set for the air-conditioned space 1 based on the air-conditioning capacity determined within the controllable range of the air volume of the blower 15. In addition, the specified condition is a temperature condition that is higher than the temperature of the water that causes dew condensation on the surface of the radiation surface formed by the plurality of cold and hot water radiant tubes 32 by a specified temperature (for example, 3°C). The details of the control unit 19 will be described later.

[0099] Next, refer to Figure 3 to describe the detailed structure of the air supply device 11.

[0100] Figure 3 is a perspective view showing the installation image of the air supply device 11 in the radiant air-conditioning system 100.

[0101] The air supply device 11 is a device that supplies a planar uniform flow of gentle wind speed from the air supply surface to the air-conditioned space 1. In the present embodiment, as Figure 1 shown, the air supply device 11 is arranged near the ceiling surface of the air-conditioned space 1, and supplies a planar uniform flow of gentle wind speed from the ceiling surface of the air-conditioned space 1 toward the ground.

[0102] As Figure 3 shown, the air supply device 11 is configured to include: blow nozzles 13 (blow nozzles 13a, 13b, 13c, 13d), a blower box 14, blowers 15a, 15b collectively referred to as the blower 15, air supply chambers 18a, 18b collectively referred to as the air supply chambers 18, a control unit 19, a suction port 21, blow slits 22 (blow slits 22a, 22b, 22c, 22d), and blower outlets 23a, 23b collectively referred to as the blower outlets 23. In the present embodiment, the air supply device 11 is composed of a plurality of (two in this example) air supply units 12 (air supply units 12a, 12b).

[0103] Here, the air supply unit 12a includes the blowing nozzles 13a, 13b, a part of the blower casing 14, the blower 15a, the air supply chamber 18a, a part of the suction port 21, the blowing slits 22a, 22b, and the blower outlet 23a.

[0104] In addition, the air supply unit 12b includes the blowing nozzles 13c, 13d, a part of the blower casing 14, the blower 15b, the air supply chamber 18b, a part of the suction port 21, the blowing slits 22c, 22d, and the blower outlet 23b.

[0105] Furthermore, the components constituting the air supply unit 12 do not necessarily have to be structured as described above, as long as they include at least one blower, a blowing nozzle, an air supply chamber, a control unit, a suction port, a blowing slit, and a blower outlet.

[0106] In this way, by dividing the air supply device 11 into a plurality of air supply units 12, it is possible to represent an arbitrary air supply mechanism in the air-conditioned space 1 through the combination of the air supply units 12, and it is possible to simultaneously control a plurality of air supply units 12 by a single control unit 19, so the generalization of the system can be achieved.

[0107] Next, with reference to Figure 4 , the flow of air in the air supply device 11 will be described.

[0108] Figure 4 is a plan view showing the flow of air in the air supply device 11.

[0109] In the air supply device 11, the inhaled air A0 inhaled from the suction port 21 is distributed into the air A1a flowing into the air supply unit 12a and the air A1b flowing into the air supply unit 12b by the operation of the blowers 15a and 15b.

[0110] Here, the air supply unit 12a and the air supply unit 12b have the same structure and are arranged symmetrically with respect to the boundary line between the air supply unit 12a and the air supply unit 12b. Therefore, in the air supply unit 12a and the air supply unit 12b, the relationship that the air volume of the air A1a = the air volume of the air A1b generally holds.

[0111] After that, the air A2a and the air A2b that have passed through the blower outlets 23a and 23b are temporarily stored in the air supply chambers 18a and 18b respectively, and are sequentially supplied to the blowing nozzles 13a, 13b and the blowing nozzles 13c, 13d by the pushing force from the blowers 15a and 15b.

[0112] The air supply nozzles supply the air A3a, A3b, A3c, A3d to the blowing nozzles 13a, 13b, 13c, 13d respectively.

[0113] In addition, the relationship between the respective air volumes is not strictly defined, but it is preferable that the blowing nozzles 13a and 13b, and the blowing nozzles 13c and 13d are respectively arranged symmetrically with respect to the center line of the air flow direction in the air supply chambers 18a and 18b, so that the air volume of the nozzle air A3a = the air volume of the nozzle air A3b = the air volume of the nozzle air A3c = the air volume of the nozzle air A3d.

[0114] Moreover, the nozzle air A3a, A3b, A3c, and A3d flow in the long side direction of each nozzle, and a part of it serves as the blown air Q0 (refer to Figure 8 ) and flows out from the blowing slits 22a, 22b, 22c, and 22d toward the depth side of the drawing respectively.

[0115] In addition, although not described in Figure 4 , in order to make the air volume flowing out from the blowing slit 22 constant regardless of the long side direction of the nozzle, fins for rectification or the like can also be provided inside the blowing nozzle 13.

[0116] Hereinafter, the details of the constituent elements of the air supply device 11 in the present embodiment will be described. In addition, since the air supply units 12a and 12b have equivalent constituent elements, here, as the air supply unit included in the air supply device 11, the air supply unit 12a will be described as an example.

[0117] As described above, the air supply unit 12a is configured to include the blowing nozzles 13a and 13b, a part of the blower box 14, the blower 15a, the air supply chamber 18a, a part of the suction port 21, the blowing slits 22a and 22b, and the blower outlet 23a.

[0118] The blower 15a creates a pressure difference between the air-conditioned space 1 and the blower box 14, takes in the circulating air from the air-conditioned space 1 through the suction port 21, and supplies it to the air supply chamber 18a. The blower 15a includes an impeller 16a and a motor 17a (refer to Figure 3 ), and supplies air by driving the impeller 16a with the motor 17a. In addition, since the impeller 16b and the motor 17b mounted on the blower 15b are the same as the impeller 16a and the motor 17a respectively, the description thereof is omitted.

[0119] The air supply chamber 18a is a space for temporarily storing the circulating air supplied by the blower 15a, and functions to equalize the distribution of the air supplied by the blower 15 and make the air supply volumes to the blowing nozzles 13a and 13b equal.

[0120] Inside the blower box 14, the blower 15a and the air supply chamber 18a are separated by a wall (partition plate) and communicate with each other via the blower outlet 23a.

[0121] The air supply chamber 18a communicates with the blowing nozzles 13a and 13b respectively on the surfaces opposite to the surface connected to the blower 15a, forming continuous air paths from the blower 15a to the blowing nozzle 13a and from the blower 15a to the blowing nozzle 13b respectively.

[0122] The blowing nozzles 13a and 13b respectively have blowing slits 22a and 22b on the surfaces facing the ground direction among the six surfaces they each have.

[0123] The blowing slits 22 (the blowing slits 22a and 22b) are outlets for blowing the air supplied through the air supply chamber 18a and the blowing nozzles 13 (the blowing nozzles 13a and 13b) into the air-conditioned space 1, and are formed in a slit shape along the direction in which the blowing nozzle 13 extends from the blower box 14 (corresponding to Figure 3 the left - right direction in the figure).

[0124] When the lengths of the left - right blowing nozzles 13a and 13b in this direction are set as the blowing nozzle lengths, these lengths are formed to be sufficiently long with respect to the length of one side of the contact surface with the blower box 14. The contact surface with the blower box 14 is preferably set such that the length in the normal direction (the up - down direction) of the blowing slits 22a and 22b is longer than the length in other directions (the tangential direction) of this contact surface. For example, in the blowing nozzles 13a and 13b, when the length of the side of the contact surface with the blower box 14 is 17 cm in length and 4 cm in width, the blowing nozzle length is set to be about 2 m.

[0125] In addition, the blowing nozzles 13a and 13b are arranged side by side substantially parallel (including parallel) to each other such that the blowing slits 22a and 22b are located in the same plane substantially parallel to the ceiling surface, and a prescribed interval (for example, 16 cm) is provided between the blowing nozzle 13a and the blowing nozzle 13b. By forming such a structure, the guiding space 2 between the blowing nozzle 13a and the blowing nozzle 13b can be sufficiently ensured, and an air flow over a wide range of blowing directions can be generated.

[0126] In addition, the air supply units 12a and 12b are arranged side by side such that the same prescribed interval (for example, 16 cm) is also formed between the blowing nozzle 13b and the blowing nozzle 13c of the air supply unit 12b.

[0127] The air supply unit 12a is configured as described above.

[0128] Further, in the air supply unit 12a, when the fan 15a operates, the air in the conditioned space 1 is sucked in from the suction port 21, and the sucked air is sent out into the air supply chamber 18a via the fan air outlet 23a. Moreover, the air sent into the air supply chamber 18a is sent to the blowing nozzle 13a. The air sent to the blowing nozzle 13a is blown out from the blowing slit 22a toward the floor surface direction of the conditioned space 1.

[0129] In addition, the air sent into the air supply chamber 18a is also sent to the blowing nozzle 13b in the same manner as the blowing nozzle 13a. The air sent to the blowing nozzle 13b is also blown out from the blowing slit 22b toward the floor surface direction of the conditioned space 1.

[0130] At this time, the air (hereinafter referred to as the guiding air Q1) guided by the air (hereinafter referred to as the blowing air Q0) blown out from the blowing slit 22a and the blowing slit 22b flows into the space between the blowing nozzle 13a and the blowing nozzle 13b, and the inflowing guiding air Q1 merges with the blowing air Q0 and is blown out toward the floor surface direction of the conditioned space 1.

[0131] The control unit 19 determines the air conditioning capacity required for temperature adjustment within the adjustable air volume range of the fan 15 based on the input temperature information received from the set temperature input unit 51. Based on the determined air conditioning capacity, the control unit 19 varies the voltage value of the motor 17a so that the temperature information received from the temperature detection unit 52 approaches the input temperature received from the set temperature input unit 51, and adjusts the air volume of the blowing air Q0 based on the fan 15a by controlling the rotational speed of the impeller 16a.

[0132] Next, with reference to Figure 5 the detailed structure of the radiant heat generation device 31 will be described.

[0133] Figure 5 is a schematic connection diagram showing the connection relationship of the cold and hot water radiant tubes 32 and other related components in the radiant heat generation device 31. In addition, in Figure 5 the refrigerant circuit 43 and the outdoor unit 42 are not shown and are omitted.

[0134] The radiant heat generation device 31 is a device that air - conditions the conditioned space 1 by utilizing the radiant heat of a plurality of tubes through which refrigerants such as cold and hot water flow.

[0135] In the present embodiment, the radiant heat generation device 31 functions to adjust the temperature of the blowing air Q0 blown out from the air supply device 11 and to impart radiant heat to the people and objects present in the conditioned space 1.

[0136] Specifically, as shown in Figure 5As shown, the radiant heat generating device 31 is configured to include cold and hot water radiant pipes 32 (pipes 32a1 to 8, 32b1 to 8, 32c1 to 8, 32d1 to 8), a water supply pipe 33, a drain pipe 34, a cold and hot water generating cooler 35, and a water supply pump 36.

[0137] The cold and hot water radiant pipes 32 have a plurality of and the same number of pipes on all (two) sides of the blowing nozzle 13 respectively. And the plurality of cold and hot water radiant pipes 32 are arranged such that the distance between all adjacent pipes is the same interval.

[0138] For example, Figure 5 pipes 32a1 to 32a4 are present on the same surface (one side of the blowing nozzle 13a) and are arranged at a certain distance. Their distance is set such that the distance between adjacent pipes is, for example, 10 mm. In addition, Figure 5 pipes 32a5 to 32a8 are present on the same surface (the other side of the blowing nozzle 13a) and are similarly arranged at a certain distance.

[0139] In the present embodiment, the cold and hot water radiant pipe 32a constitutes a pipe group having a total of eight linear pipes (pipes 32a1, 32a2, 32a3, 32a4, 32a5, 32a6, 32a7, 32a8) on opposite two sides of one blowing nozzle 13a.

[0140] Similarly, the cold and hot water radiant pipes 32b, 32c, and 32d also constitute, on opposite two sides of each of the blowing nozzles 13b to 13d respectively: a pipe group having a total of eight linear pipes 32b1, 32b2, 32b3, 32b4, 32b5, 32b6, 32b7, 32b8; a pipe group having pipes 32c1, 32c2, 32c3, 32c4, 32c5, 32c6, 32c7, 32c8; and a pipe group having pipes 32d1, 32d2, 32d3, 32d4, 32d5, 32d6, 32d7, 32d8.

[0141] Here, the pipes of the cold and hot water radiant pipes 32a, 32b, 32c, 32d of these pipe groups with the last digits of their respective symbols being "1" and "2", "3" and "4", "5" and "6", "7" and "8" are directly connected at one end side. The pipes with the last digits of the symbols being "1", "3", "5", and "7" are directly connected to the water supply pipe 33 at the other end side, and the pipes with "2", "4", "6", and "8" are directly connected to the drain pipe 34 at the other end side.

[0142] Thus, the cold and hot water radiant pipes 32a, 32b, 32c, and 32d form a single closed system connected to the same water supply pipe 33 and drain pipe 34. Thus, the supply paths of the cold and hot water that serve as the heat source can be gathered into one, so that the simplification of the equipment can be achieved.

[0143] In addition, regarding the connection relationship of these cold and hot water radiant pipes 32, it is not necessarily required to connect them in this order, as long as the conditions (a) at least one pipe is connected to the water supply pipe 33, and in addition, the same number of pipes connected to the water supply pipe 33 are connected to the drain pipe 34, and (b) when the pipes are directly connected to each other, one of the two connected pipes is connected to the water supply pipe 33 and the other is connected to the drain pipe 34 are satisfied.

[0144] For example, it may also be configured such that the pipes with the last digits of the symbols of the cold and hot water radiant pipes 32a, 32b, 32c, and 32d being "1", "2", "5", and "6" are connected to the water supply pipe 33, the pipes with the last digits of the symbols being "3", "4", "7", and "8" are connected to the drain pipe 34, and in addition, the pipes with the last digits of the symbols being "1" and "3", "2" and "4", "5" and "7", and "6" and "8" are directly connected to each other.

[0145] In order to reliably supply and drain water to and from all the cold and hot water radiant pipes 32a, 32b, 32c, and 32d, the water supply pipe 33 and the drain pipe 34 are preferably made of pipes with a diameter larger than that of the cold and hot water radiant pipes 32a, 32b, 32c, and 32d, and are configured to correspond to a large flow rate.

[0146] For example, when the diameter of all the pipes included in the cold and hot water radiant pipes 32 is 4 mm, the water supply pipe 33 and the drain pipe 34 are respectively made of pipes with a diameter of about 20 mm. In addition, although the thickness of the water supply pipe 33 and the drain pipe 34 is expressed as "diameter", the cross-section does not have to be circular. For example, pipes with a rectangular cross-sectional shape can also be used.

[0147] Next, with reference to Figure 1 and Figure 5 , the flow of water circulating inside the radiant heat generating device 31 will be described.

[0148] First, as shown in Figure 1 and Figure 5 , the water introduced into the cold and hot water generating cooler 35 is heated or cooled inside the cold and hot water generating cooler 35. Here, heating or cooling uses a heat pump method utilizing a refrigerant.

[0149] Moreover, the hot and cold water that is heated or cooled is temporarily stored in a water tank or the like built into the hot and cold water generation cooler 35. By driving the water supply pump 36, water is supplied to the water supply pipe 33 at an arbitrary flow rate. Then, the hot and cold water supplied to the water supply pipe 33 is distributed and transported to the hot and cold water radiation pipes 32a, 32b, 32c, 32d, surrounds near the side of the blowing nozzle 13 of the air blowing device 11, and is recovered to the drain pipe 34. The water recovered to the drain pipe 34 is sequentially sent to the hot and cold water generation cooler 35 and utilized as a heat source again.

[0150] In this way, the water in the radiant heat generation device 31 is repeatedly utilized as a heat source, so the system can be completed with a small amount of water. However, in the case where there is a concern about deterioration of the water quality of the water flowing inside, such as due to the attachment of scale to the piping part, it is preferable to use a purification filter, or set another path connected to a water supply pipe or the like to ensure redundancy, and perform water purification or replacement.

[0151] Here, as an example of the temperature change image of the water when using the radiant heat generation device 31 in this embodiment, the case of use during the cold supply period will be described.

[0152] In the radiant heat generation device 31, the water flowing into the hot and cold water generation cooler 35 at 25°C is cooled to 18°C and transported to the water supply pipe 33. After that, the cold water distributed to the plurality of hot and cold water radiation pipes 32 is heated gradually during the process of passing through the air-conditioned space 1, through heat exchange with the air in the space (the blown air Q0 blown out from the air blowing device 11) and heat radiation generated between the radiant bodies such as the wall surface constituting the air-conditioned space 1, furniture arranged inside, or a human body. The water that becomes 25°C at the moment of being recovered from the hot and cold water radiation pipe 32 to the drain pipe 34 is transported to the hot and cold water generation cooler 35 again and cooled to 18°C, and such a cycle is repeated.

[0153] In addition, the temperature change shown here is just an example, and it is not limited to this during the heating period, for example. Also, in the case where the temperature of the hot and cold water in the water supply pipe 33 is likely to change due to the external environment, there is a concern about insufficient heat source capacity or uneven temperature of the hot and cold water between the plurality of hot and cold water radiation pipes 32a, 32b, 32c, 32d. In such a case, it is preferable to implement countermeasures such as using a material with high heat insulation for the water supply pipe 33.

[0154] During the use in the cooling period, sometimes the temperature of the cold water distributed to the plurality of cold and hot water radiant tubes 32 is restricted by the specified conditions. It is known that the dew point temperature in the air-conditioned space 1 is calculated to be approximately 15°C when the temperature and humidity are 27°C and 50%, and dew condensation occurs when the temperature is lower than this. Therefore, the radiant heat generation device 31 restricts the temperature of the cold water flowing into the cold and hot water radiant tubes 32 with a lower limit temperature of the dew point temperature + 3°C, that is, 18°C. Additionally, here, the temperature and humidity of the air-conditioned space 1 are set to 27°C and 50% to calculate the dew point temperature, but this is just an example and is not limited thereto.

[0155] Next, with reference to Figure 6A and Figure 6B , the arrangement relationship between the blowout nozzles 13 in the air supply device 11 and the cold and hot water radiant tubes 32 in the radiant heat generation device 31 will be described.

[0156] Figure 6A is a perspective view showing the arrangement relationship between the blowout nozzles 13a and the cold and hot water radiant tubes 32a constituting the radiant air-conditioning system 100, Figure 6B is a cross-sectional view showing the arrangement relationship between the blowout nozzles 13a and the cold and hot water radiant tubes 32a constituting the radiant air-conditioning system 100.

[0157] Here, the blowout nozzles 13a, 13b, 13c, and 13d have the same structure respectively. Regarding the structure and arrangement relationship of the blowout nozzle 13a and the tubes 32a1, 32a2, 32a3, 32a4, 32a5, 32a6, 32a7, 32a8 attached to the blowout nozzle 13a, they are the same as those of the blowout nozzle 13b and the tubes 32b1, 32b2, 32b3, 32b4, 32b5, 32b6, 32b7, 32b8 attached to the blowout nozzle 13b, the blowout nozzle 13c and the tubes 32c1, 32c2, 32c3, 32c4, 32c5, 32c6, 32c7, 32c8 attached to the blowout nozzle 13c, and the blowout nozzle 13d and the tubes 32d1, 32d2, 32d3, 32d4, 32d5, 32d6, 32d7, 32d8 attached to the blowout nozzle 13d. Therefore, the blowout nozzle 13a will be described as a representative hereafter.

[0158] In addition, in the description of the arrangement, among the tubes 32a1, 32a2, 32a3, 32a4, 32a5, 32a6, 32a7, 32a8, the four-tube group of tubes 32a1, 32a2, 32a3, 32a4 and the four-tube group of tubes 32a5, 32a6, 32a7, 32a8 exist symmetrically about the blowout nozzle 13a, and their constitutions and effects are equivalent. Therefore, only the four-tube group of tubes 32a1, 32a2, 32a3, 32a4 will be described as a representative.

[0159] As shown inFigure 6A As shown, the blowing nozzle 13a is a rectangular parallelepiped-shaped component with a cavity inside, and has a blowing slit 22a as an opening on the surface facing the ground among the six surfaces.

[0160] The blowing nozzle 13a is made of a material such as aluminum that easily conducts heat, and the air flowing through the hollow interior (the blowing air Q0 described later) and the air passing through the gap (the guiding air Q1 described later) can easily exchange heat with the cold and hot water radiation pipe 32a via the side member.

[0161] As Figure 6B shown, the width of the blowing slit 22a is small relative to the surface on which the blowing slit 22a exists, and the cavity portion inside the blowing nozzle 13a has a structure that gradually narrows from top to bottom in a manner consistent with the width of the blowing slit 22a.

[0162] The cold and hot water radiation pipe 32a is disposed in close contact with the two side surfaces connected to the surface provided with the blowing slit 22a (the blowing direction of the blowing nozzle 13a). More specifically, the pipes 32a1 to 32a8 constituting the cold and hot water radiation pipe 32a each have a length longer than the length in the long side direction of the blowing nozzle 13a, and are formed into a structure capable of adjusting the temperature from the root to the front end of the long side direction of the side surface of the blowing nozzle 13a.

[0163] In addition, the pipes 32a1 to 32a4 are on the same surface on one side surface of the blowing nozzle 13a ( Figure 6A and Figure 6B the left side surface), and are disposed at a certain distance in the order of the pipes 32a1, 32a3, 32a2, 32a4 from the lower side (the blowing slit 22 side). And the water flowing in from the pipes 32a1 and 32a3 circulates via the pipes 32a2 and 32a4 while exchanging heat.

[0164] Similarly, the pipes 32a5 to 32a8 are on the same surface on the other side surface of the blowing nozzle 13a ( Figure 6A and Figure 6B the right side surface), and are disposed at a certain distance in the order of the pipes 32a5, 32a7, 32a6, 32a8 from the lower side (the blowing slit 22 side). And it is configured such that the water flowing in from the pipes 32a5 and 32a7 circulates via the pipes 32a6 and 32a8 while exchanging heat.

[0165] Thus, the cold and hot water radiation pipe 32a can, for example, conduct heat not only to the air passing through the gap between the blowing nozzle 13a and the blowing nozzle 13b (the guiding air Q1 described later), but also to the blowing nozzle 13a itself in close contact.

[0166] In this case, by making use of the entire area of the heat-conducting air outlet nozzle 13a, heat radiation is carried out with a human body or the like disposed in the air-conditioned space 1, and the thermal comfort felt by a person living in the air-conditioned space 1 can be further improved. In addition, the basis of this effect is the effect based on the principle that the amount of heat transfer between two objects by heat radiation is proportional to the cross-sectional area directly facing each other between the two objects and the distance between the two objects.

[0167] Figure 7 It is a structural diagram showing the arrangement relationship between the air outlet nozzle 13 of the air supply device 11 constituting the radiant air-conditioning system 100 and the cold and hot water radiant pipe 32 of the radiant heat generating device 31.

[0168] As Figure 7 shown, the air outlet nozzles 13 (air outlet nozzles 13a, 13b, 13c, 13d) are arranged to be offset from the ceiling surface in the air-conditioned space 1, and a guiding space 2 is formed between the ceiling surface and the air outlet nozzles 13.

[0169] The air outlet nozzles 13a, 13b, 13c, 13d each have air outlet slits 22a, 22b, 22c, 22d on the surface facing the ground direction. The air outlet nozzles 13a, 13b, 13c, 13d are arranged to be offset from the ceiling surface at the same distance, and the air outlet slits 22a, 22b, 22c, 22d are located on the same plane.

[0170] In addition, the air outlet nozzles 13a, 13b, 13c, 13d are arranged side by side at equal intervals. Along with this, the air outlet slits 22a, 22b, 22c, 22d are also arranged side by side at equal intervals. This arrangement interval is configured, for example, such that the interval between the center lines of each air outlet nozzle 13 (the interval between each air outlet slit 22) is 200 mm, and the gap between the air outlet nozzles 13 (a part of the guiding space 2) is 160 mm.

[0171] In addition, the plurality of air outlet slits 22 are respectively provided along the long side direction of the plurality of air outlet nozzles 13. The position of the air outlet slit 22 is set on the line that bisects the surface of the air outlet nozzle 13 facing the ground direction in the side-by-side direction (the direction perpendicular to the long side direction) of the air outlet nozzles 13.

[0172] And, as Figure 7 shown, in the radiant air-conditioning system 100, the cold and hot water radiant pipes 32 are arranged on both side surfaces of each of the plurality of adjacent air outlet nozzles 13.

[0173] Next, with reference to Figure 8 , the flow of the blown-out air Q0 from the air outlet nozzle 13 and the flow of the guiding air Q1 generated thereby near the air outlet nozzle 13 and the cold and hot water radiant pipe 32 will be described.

[0174] Figure 8 This is a cross-sectional view showing the flow directions of the blown air Q0 from the blow nozzles 13 of the air supply device 11 and the guiding air Q1 generated near the cold and hot water radiation pipes 32.

[0175] As Figure 8 shown, the air supplied to the blow nozzles 13a, 13b, 13c, and 13d is discharged as blown air Q0 from the blow gaps 22a, 22b, 22c, and 22d into the conditioned space 1.

[0176] Here, as described above, since the blow nozzles 13a, 13b, 13c, and 13d discharge the same amount of air volume from the blow gaps 22a, 22b, 22c, and 22d respectively, the blown air Q0 becomes uniformly distributed in the arrangement direction of the plurality of blow nozzles 13 and forms a wind speed distribution having a peak at each gap of the blow gap 22. By utilizing the slit-shaped blowout port, the blown air Q0 has the property of having a relatively high wind speed with respect to the air volume, so a highly straight-flowing air current is generated in the blow direction.

[0177] In addition, due to the blown air Q0, a pressure difference is generated between the periphery of the blow nozzle 13 and the guiding space 2, and the guiding air Q1 flowing into the guiding space 2 between the blow nozzle 13 and the ceiling surface is generated. Here, since the guiding air Q1 is the air introduced into the guiding space 2 having a cross-sectional area much larger than the cross-sectional area of the blow gap 22, it has the property that the wind speed is very small with respect to the air volume. Generally, the relationship of the air volume satisfies the relationship that the air volume of the blown air Q0 < the air volume of the guiding air Q1.

[0178] That is, if the capacity of the cold and hot water radiation pipe 32 is constant, more heat can be exchanged in a shorter time by conducting heat to the guiding air Q1 than by conducting heat to the blown air Q0.

[0179] The guiding air Q1 is guided to the blow direction of the blown air Q0 of the blow nozzle 13 and passes near the cold and hot water radiation pipes 32 (cold and hot water radiation pipes 32a, 32b, 32c, and 32d) arranged on the side of the blow nozzle 13.

[0180] Here, when the guiding air Q1 passes near the cold and hot water radiation pipe 32 and becomes the guiding air Q2, heating or cooling based on convective heat conduction is performed. For example, when the temperature T1 of the guiding air Q1 is 28°C (the same temperature as the conditioned space 1) and the surface temperature Tp of the cold and hot water radiation pipe 32 is 18°C, the temperature T2 of the guiding air Q2 is cooled to a certain value between the temperature T1 and the temperature Tp (for example, 25°C). And the cooled guiding air Q2 is integrated with the blown air Q0 from the blow nozzle 13, and thus is sent to the conditioned space 1 as a planar uniform flow with a low wind speed.

[0181] In this way, in the radiant heat generating device 31, by utilizing the blown air Q0 and the guide air Q1 by the air supply device 11, the air in the air-conditioned space 1 can be conditioned to improve thermal comfort. In addition, generally speaking, the thermal conductivity of the surface of the hot and cold water radiant tube 32 increases as the wind speed of the airflow flowing on the surface increases, so compared with the case where no airflow is generated, a higher air conditioning capacity can be obtained due to the generation of the guide air Q1.

[0182] Furthermore, since a planar uniform airflow can be generated, the temperature unevenness of the air-conditioned space 1 can be suppressed, a comfortable environment can be provided, and a comfortable cool feeling without wind unevenness can be given. Therefore, in this embodiment, the thermal comfort of the radiation air conditioning system 100 can be further improved.

[0183] Next, the range of air conditioning performance that radiant air conditioning system 100 can output will be described.

[0184] The larger the air volume of the blown air Q0 and the guided air Q1 based on the air supply device 11 is, the greater the air conditioning capacity of the radiant air conditioning system 100 can be for the air-conditioned space 1. Therefore, when the action of the air supply device 11 is set to the lower limit of the air volume controllable range, that is, the action is stopped (air volume 0m 3 / h), no blown air Q0 and guided air Q1 are generated, so the radiation air conditioning system 100 becomes a minimum output air conditioning capacity (for example 200W) for the air conditioned space 1 determined by the water temperature and water amount flowing into the hot and cold water radiant tubes 32.

[0185] On the other hand, when the operation of the air supply device 11 is set to the upper limit of the air volume controllable range, that is, the maximum operation (for example, the air volume is 400m 3 / h), the air volumes of the blown air Q0 and the guided air Q1 are also maximized, so the radiant air conditioning system 100 has the maximum output air conditioning capability (for example, 800 W) for the air-conditioned space 1.

[0186] That is, when there is no air supply by the air supply device 11, the air conditioning capacity of the radiation air conditioning system 100 becomes a constant capacity of 200 W. On the other hand, when there is air supply within the controllable air volume range by the air supply device 11, the air conditioning capacity of the radiation air conditioning system 100 can be adjusted within the range of 200 W to 800 W.

[0187] By changing the air volume of the air supply device 11 in this way, the air conditioning capacity can be made variable in a manner that the radiation air conditioning system 100 cooperates therewith, so that the temperature of the air-conditioned space 1 can be adjusted to meet the user's desired temperature in a wide range.

[0188] Next, with reference to Figure 9 , the control operation of the control unit 19 will be described based on the relationship with the set temperature input unit 51 and the temperature detection unit 52.

[0189] Figure 9 FIG. is a flowchart showing the control steps of the air volume of the air supply device 11 based on the radiant air conditioning system 100.

[0190] As Figure 9 shown, the radiant air conditioning system 100 first operates (S01) by the user inputting a desired temperature (e.g., 24°C) to the set temperature input unit 51.

[0191] Next, the temperature of the air-conditioned space 1 is detected by the temperature detection unit 52 (S02).

[0192] Next, the control unit 19 calculates the temperature difference between the desired temperature input to the set temperature input unit 51 and the temperature of the air-conditioned space 1 detected by the temperature detection unit 52, and determines whether the calculated temperature difference converges within a range of a preset first reference value (e.g., a range of -0.5°C to +0.5°C) (S03).

[0193] If the result of the determination is that the calculated temperature difference converges within the range of the first reference value (Yes in S03), the control unit 19 issues an instruction to maintain the air volume of the air supply device 11 (the blower 15) as it is (S04).

[0194] On the other hand, if the calculated temperature difference does not converge within the range of the first reference value (No in S03), the process proceeds to step S05.

[0195] Next, it is determined whether the temperature difference obtained by subtracting the indoor temperature from the input temperature is equal to or greater than a second reference value (e.g., +0.5°C) (S05).

[0196] If the result of the determination is that the temperature difference is equal to or greater than the second reference value (Yes in S05), the control unit 19 issues an instruction to reduce the air volume of the air supply device 11 and reduce the air conditioning capacity (S06).

[0197] On the other hand, if the temperature difference is not equal to or greater than the second reference value (No in S05), the process proceeds to step S07.

[0198] Next, it is determined whether the temperature difference obtained by subtracting the indoor temperature from the input temperature is equal to or less than a third reference value (e.g., -0.5°C) (S07).

[0199] When the result of the determination is that the temperature difference is equal to or less than the third reference value ("Yes" in S07), the control unit 19 issues an instruction to increase the air volume of the air supply device 11 (the blower 15) and increase the air conditioning capacity (S08).

[0200] On the other hand, when the temperature difference is not equal to or less than the third reference value ("No" in S07), the process returns to step S03 and the determination is repeated.

[0201] Here, the desired temperature is set to 24°C, the range of the first reference value is set to -0.5°C to +0.5°C, the second reference value is set to +0.5°C, and the third reference value is set to -0.5°C, but it is not limited thereto.

[0202] With the above structure, even when the cold and hot water generating cooler 35 controls the water temperature under specified conditions, the radiant air conditioning system 100 can vary the air conditioning capacity by controlling the air volume of the air supply device 11 (the blower 15) and control the temperature of the air-conditioned space 1 to the temperature desired by the user.

[0203] Here, in the specified conditions, there are cases where the water temperature condition is higher than the dew point temperature of the above-described air-conditioned space 1 (for example, 18°C), or conditions where the cold and hot water generating cooler 35 is used for other purposes than the radiant air conditioning system 100 and the water temperature and water volume cannot be set only by the radiant air conditioning system 100.

[0204] As described above, the radiant air conditioning system 100 according to the first embodiment can achieve the following effects.

[0205] (1) The radiant air conditioning system 100 includes: a plurality of blowout nozzles 13 having slit-shaped blowout ports (blowout slits 22); a blower 15 that supplies air to the plurality of blowout nozzles 13; and a radiant heat generating device 31 that generates radiant heat. The plurality of blowout nozzles 13 are arranged side by side with a gap such that their respective blowout ports (blowout slits 22) are located on the same plane. The radiant heat generating devices 31 are respectively provided at positions that are side surfaces with respect to the blowout directions of the blowout nozzles 13. The guiding air Q1 guided by the blowout air Q0 blown out from the blowout nozzles 13 passes through the gap.

[0206] According to such a structure, the air (guided air Q1) guided to the gap of the blowing nozzle 13 exchanges heat with the surface of the cold and hot water radiation pipe 32 located on the side of the blowing nozzle 13 to become the guided air Q2. After that, the guided air Q2 merges with the blowing air Q0 from the blowing nozzle 13, and thus is sent to the air-conditioned space 1 as a planar uniform flow with a low wind speed. In addition, since the amount of the guided air Q2 is usually larger than that of the blowing air Q0, the cold and hot water radiation pipe 32 exchanges heat more intensively with the guided air Q2 than with the blowing air Q0, and the heat conduction amount can be increased. And by installing the cold and hot water radiation pipe 32 on the side of the blowing nozzle 13, the temperature is transferred to the blowing nozzle 13 itself by heat conduction, the heat exchange based on the guided air Q1 can be improved, and the radiation area can be increased. Therefore, an air conditioner that suppresses temperature deviation or air flow feeling in the entire air-conditioned space 1 can be realized, and an air-conditioned space 1 without unevenness in the perceived temperature can be realized. That is, a radiant air-conditioning system 100 that can improve the thermal comfort of the space can be realized.

[0207] (2) In the radiant air-conditioning system 100, the radiant heat generating device 31 is composed of a plurality of cold and hot water radiation pipes 32. Thus, the radiant heat generating device 31 can be divided, and the surface area relative to the refrigerant used can be increased. Therefore, the heat conduction from the cold and hot water radiation pipe 32 to the air or the blowing nozzle 13 is promoted, and the suppression effect of unevenness in the perceived temperature in the air-conditioned space 1 can be further improved.

[0208] (3) The radiant air-conditioning system 100 is configured to include: an outdoor unit 42 having a heat pump 44; and a cold and hot water generating cooler 35 that sends the water whose temperature has been adjusted by using the refrigerant whose temperature has been adjusted in the outdoor unit 42, and sends the water whose temperature has been adjusted by the cold and hot water generating cooler 35 to the cold and hot water radiation pipe 32. Thus, it is not necessary to use refrigerants such as Freon and alternative Freon in the indoor cold and hot water radiation pipe 32. Therefore, compared with the case of using Freon and alternative Freon, the construction can be carried out simply, and the disposal can also be carried out simply.

[0209] (4) In the radiant air-conditioning system 100, the control unit 19 is configured to control the air volume of the air supply device 11 so that the temperature detected by the temperature detection unit 52 approaches the temperature set by the set temperature input unit 51. Thus, the radiant air-conditioning system 100 can vary the air-conditioning capacity relative to the air-conditioned space 1 within the controllable range of the air volume of the blowing air Q0 and the guided air Q1 based on the air supply device 11. Therefore, the temperature of the air-conditioned space 1 can correspond to the desired temperature of the user in a wide range.

[0210] (5) In the radiation air-conditioning system 100, the air volume of the air supply device 11 is controlled by the control unit 19 so that the temperature detected by the temperature detection unit 52 approaches the temperature set by the set temperature input unit 51. Thus, even when the water temperature set by the cooler 35 using cold and hot water is restricted to a certain specified condition, the air-conditioning capacity for the air-conditioned space 1 can be made variable by controlling the air volume of the air supply device 11.

[0211] (First modified example)

[0212] Next, with reference to Figure 10A and Figure 10B , the radiation air-conditioning system 100a of the first modified example will be described.

[0213] Figure 10A FIG. is a perspective view showing the arrangement relationship between the blowout nozzle 113a and the cold and hot water radiation pipe 132a constituting the radiation air-conditioning system 100a of the first modified example, Figure 10B FIG. is a cross-sectional view showing the arrangement relationship between the blowout nozzle 113a and the cold and hot water radiation pipe 132a constituting the radiation air-conditioning system 100a of the first modified example.

[0214] The radiation air-conditioning system 100a of the first modified example is different from the first embodiment in that the cold and hot water radiation pipe 132 is disposed in the air supply duct 123 within the blowout nozzle 113. Except for this, the structure of the radiation air-conditioning system 100a is the same as that of the radiation air-conditioning system 100 of the first embodiment. Hereinafter, the description of the content already described in the first embodiment will be appropriately omitted, and mainly the points different from the first embodiment will be described.

[0215] The radiation air-conditioning system 100a of the first modified example includes: blowout nozzles 113a, 113b, 113c, 113d collectively referred to as the blowout nozzle 113 in the air supply device 11; air supply ducts 123a, 123b, 123c, 123d collectively referred to as the air supply duct 123; and cold and hot water radiation pipes 132a, 132b, 132c, 132d collectively referred to as the cold and hot water radiation pipe 132 in the radiant heat generation device 31. In addition, the plurality of blowout nozzles 113a, 113b, 113c, 113d each have a plurality of blowout slits 122a, 122b, 122c, 122d (collectively referred to as the blowout slits 122). Since each component has the same structure, hereinafter, the description will focus on the blowout nozzle 113a, the air supply duct 123a, and the cold and hot water radiation pipe 132a. Therefore, the illustration of the blowout nozzles 113b, 113c, 113d, the air supply ducts 123b, 123c, 123d, the blowout slits 122b, 122c, 122d, and the cold and hot water radiation pipes 132b, 132c, 132d is omitted.

[0216] In the radiant air-conditioning system 100a of the first modified example, as Figure 10A and Figure 10B shown, the blowing nozzle 113a has an air supply passage 123a inside.

[0217] The air supply passage 123a is a cavity portion inside the blowing nozzle 113a and is hardly exposed to the conditioned space 1.

[0218] In addition, in the radiant air-conditioning system 100a, as Figure 10A and Figure 10B shown, the cold and hot water radiant pipes 132a are arranged on the surface of the inner side surface of the blowing nozzle 113a. That is, although the cold and hot water radiant pipes 132a are arranged on the side surface of the blowing nozzle 113a, they are not exposed in the guiding air passage (guiding space).

[0219] More specifically, the pipes 132a1 to 132a8 that constitute the cold and hot water radiant pipes 132a are respectively arranged on the surface of the inner side surface of the blowing nozzle 113a and have a length longer than the length in the long side direction of the blowing nozzle 113a. And the pipes 132a1 to 132a4 are arranged on one inner side surface of the blowing nozzle 113a ( Figure 10A and Figure 10B the left inner side surface), and are arranged at a certain distance in the order of pipes 132a1, 132a3, 132a2, 132a4 from the lower side (the blowing slit 122a side). And it is configured such that the water flowing in from pipes 132a1 and 132a3 respectively circulates through pipes 132a2 and 132a4 while performing heat exchange.

[0220] Similarly, the pipes 132a5 to 132a8 are arranged on the other inner side surface of the blowing nozzle 113a ( Figure 10A and Figure 10B the right inner side surface), and are arranged at a certain distance in the order of pipes 132a5, 132a7, 132a6, 132a8 from the lower side (the blowing slit 122a side). And it is configured as a structure in which the water flowing in from pipes 132a5 and 132a7 respectively circulates through pipes 132a6 and 132a8 while performing heat exchange. In addition, the cold and hot water radiant pipes 132a are in close contact with the surface of the inner side surface of the blowing nozzle 113a.

[0221] By forming such a structure, the cold and hot water radiant pipes 132a not only very easily generate a heat conduction effect with respect to the nozzle air A3a passing through the blowing nozzle 113a (refer to Figure 4 ), but also easily generate heat conduction from the inner side surface to the outer side surface of the blowing nozzle 113a, and the heat conduction effect on the guiding air Q1 which is the air guiding the airflow through the side surface of the blowing nozzle 113a also becomes larger.

[0222] Therefore, compared with the first embodiment in which the focus is placed on increasing the heat transfer effect on the guide air Q1, in the configuration of this modified example, the nozzle air A3a (see Figure 4 )'s heat conduction effect is increased, thereby promoting heat exchange using the blown air Q0, and also increasing the air conditioning capacity of the air-conditioned space 1.

[0223] Next, the control operation of the radiant air conditioning system 100a of the modified example is described. The control operation of the radiant air conditioning system 100a of the modified example is the same as the control operation of the radiant air conditioning system 100 described above, and is performed using the relationship between the control unit 19, the set temperature input unit 51 and the temperature detection unit 52. The details are as described above, so they are omitted here.

[0224] As described above, according to the radiation air conditioning system 100a of the first modification, the following effects can be obtained.

[0225] (6) In the radiation air conditioning system 100a, the cold and hot water radiation pipe 132 is provided in a manner of contacting the inner side surface of the blowing nozzle 113 so as to expose the air supply duct 123 inside the blowing nozzle 113. Thus, the structure is configured to more efficiently perform heat exchange between the blowing air Q0 and the guide air Q2, which usually has a larger air volume than the blowing air Q0, and the heat transfer can be increased. Therefore, not only can the air conditioning capacity of the air-conditioned space 1 be further improved, but also the effect of suppressing uneven body temperature can be further improved.

[0226] (7) In the radiation air conditioning system 100a, the cold and hot water radiation pipe 132 is provided in contact with the inner side surface of the blowing nozzle 113 so as to expose the air supply air path 123 inside the blowing nozzle 113. Thus, the heat exchange between the blowing air Q0 and the guide air Q2, which usually has a larger air volume than the blowing air Q0, is more efficiently performed, so that the air conditioning capacity of the radiation air conditioning system 100a within the air volume controllable range of the air supply device 11 can be output to a wider range. Therefore, even if the water temperature set by the cold and hot water generating cooler 35 is limited to a certain predetermined condition, the air conditioning capacity to the air-conditioned space 1 can be made variable within a wider range, and the temperature of the air-conditioned space 1 can be adjusted to the desired temperature of the user within a wide range.

[0227] (8) In the radiation air conditioning system 100a, the cold and hot water radiation pipe 132 is arranged in contact with the inner side surface of the blowing nozzle 113 so as to expose the air supply duct 123 inside the blowing nozzle 113. Thus, the cold and hot water radiation pipe 132 is not exposed outside the blowing nozzle 113, so that the design of the air-conditioned space 1 can be improved.

[0228] (Second Modified Example)

[0229] Next, with reference to Figures 11A to 11C , the blowout nozzles 213 and the cold and hot water radiation pipes 232 that constitute the radiant air-conditioning system 100b of the second modified example will be described.

[0230] Figure 11A is a perspective view showing the arrangement relationship between the blowout nozzle 213a and the cold and hot water radiation pipe 232a that constitute the radiant air-conditioning system 100b of the second modified example, Figure 11B is a cross-sectional view showing the arrangement relationship between the blowout nozzle 213a and the cold and hot water radiation pipe 232a that constitute the radiant air-conditioning system 100b, Figure 11C is a side view showing the arrangement relationship between the blowout nozzle 213a and the cold and hot water radiation pipe 232a that constitute the radiant air-conditioning system 100b.

[0231] The difference between the radiant air-conditioning system 100b of the second modified example and the first embodiment is that the cold and hot water radiation pipe 232 is buried in the side member of the blowout nozzle 213. Other than this, the structure of the radiant air-conditioning system 100b is the same as that of the radiant air-conditioning system 100 of the first embodiment. Hereinafter, the description of the content already described in the first embodiment will be appropriately omitted, and mainly the points different from the first embodiment will be described.

[0232] The radiant air-conditioning system 100b of the second modified example includes: blowout nozzles 213a, 213b, 213c, 213d collectively referred to as the blowout nozzle 213 in the air supply device 11; and cold and hot water radiation pipes 232a, 232b, 232c, 232d collectively referred to as the cold and hot water radiation pipe 232 in the radiant heat generation device 31. In addition, the plurality of blowout nozzles 213a, 213b, 213c, 213d each have a plurality of blowout slits 222a, 222b, 222c, 222d (collectively referred to as the blowout slits 222). Since each component has the same structure, the blowout nozzle 213a and the cold and hot water radiation pipe 232a will be described hereinafter. Therefore, the illustration of the blowout nozzles 213b, 213c, 213d, the blowout slits 222a, 222b, 222c, 222d, and the cold and hot water radiation pipes 232b, 232c, 232d is omitted.

[0233] In the radiant air-conditioning system 100b of the second modified example, as shown in Figure 11A and Figure 11B , the pipes 232a1 to 232a8 are built in the blowout nozzle 213a as an integral body. That is, the pipes 232a1 to 232a8 as a whole are buried in the side member of the blowout nozzle 213a, and are structured not to be exposed to the outside (outer surface) of the blowout nozzle 213a.

[0234] In addition, a structure like this manufactures the blowing nozzle 213a by, for example, extrusion forming of aluminum, thereby forming a gap inside the side member of the blowing nozzle 213a, and thus the gap can be formed as the cold and hot water radiation pipes 232a.

[0235] More specifically, the pipes 232a1 to 232a8 constituting the cold and hot water radiation pipes 232a are respectively buried in the side member of the blowing nozzle 213a, and are structured to have the same length as the length in the long side direction of the blowing nozzle 213a.

[0236] The pipes 232a1 to 232a4 are buried in the side member on one side of the blowing nozzle 213a ( Figure 11A and Figure 11B the left side surface), and are arranged at a certain distance in the order of the pipes 232a1, 232a3, 232a2, 232a4 from the lower side (the blowing slit 222a side). And they are structured such that the water flowing into the pipes 232a1 and 232a3 respectively circulates through the pipes 232a2 and 232a4 while performing heat exchange.

[0237] Similarly, the pipes 232a5 to 232a8 are buried in the side member on the other side of the blowing nozzle 213a ( Figure 11A and Figure 11B the right side surface), and are arranged at a certain distance in the order of the pipes 232a5, 232a7, 232a6, 232a8 from the lower side (the blowing slit 222a side). And they are structured such that the water flowing into the pipes 232a5 and 232a7 respectively circulates through the pipes 232a6 and 232a8 while performing heat exchange.

[0238] The ends of each pipe (pipes 232a1 to 232a8) are processed into screw hole shapes, and the water supply pipe 33 and the drain pipe 34 are respectively structured to be connectable through screw-in type connection ports. In addition, the ends of each pipe on the side opposite to the ends connected to the connection ports of the water supply pipe 33 or the drain pipe 34 form a flow path that is connected and communicated by similarly connecting the return pipes 45a1 and 45a2 through screw-in type connection ports.

[0239] Specifically, as Figure 11C shown, the water supply pipe 33 is connected to one ends of the pipes 232a1 and 232a3 inside the blowing nozzle 213a. The other ends of the pipes 232a1 and 232a3 are respectively connected to one ends of the pipes 232a2 and 232a4 through the return pipes 45a1 and 45a2. And the other ends of the pipes 232a3 and 232a4 are connected to the drain pipe 34.

[0240] In the case of adopting such a structure, the heat conduction from the cold and hot water radiation pipe 232a to the air-blowing nozzle 213a itself can be further promoted, causing the temperature of the air-blowing nozzle 213a itself to change. That is, the entire area of the air-blowing nozzle 213 that is heat-conducted can be further utilized to perform heat radiation with a human body or the like disposed in the air-conditioned space 1, further improving the thermal comfort felt by the people living in the air-conditioned space 1.

[0241] As described above, the radiation air-conditioning system 100b according to the second modified example can achieve the following effects.

[0242] (9) In the radiation air-conditioning system 100b, a plurality of cold and hot water radiation pipes 232 are configured to be built into the side members constituting the air-blowing nozzle 213. Thus, when manufacturing the air-blowing nozzle 213, it is not necessary to separately manufacture and install the cold and hot water radiation pipes 232, and the air-blowing nozzle 213 with the built-in cold and hot water radiation pipes 232 can be manufactured only by manufacturing the side members. Therefore, the air-blowing nozzle 213 can be manufactured simply at a lower cost. In addition, by building in the cold and hot water radiation pipes 232, the heat conduction to the air-blowing nozzle 213 is further promoted, and heat radiation is performed with a human body or the like disposed in the air-conditioned space 1, and the thermal comfort felt by the people living in the air-conditioned space 1 can be further improved.

[0243] As described above, the present invention has been described based on the embodiments. Those skilled in the art can understand that the embodiments are illustrative, and various modifications can be made to the combination of each constituent element or each processing step, and such modifications are also within the scope of the present invention.

[0244] In addition, in the radiation air-conditioning system 100 of the first embodiment, the cold and hot water radiation pipe 32 is arranged on the same plane as the side surface on the outer side of the air-blowing gap 22, but it is not limited thereto.

[0245] As long as the cold and hot water radiation pipe 32 is arranged at a position not blocked by the air-blowing nozzle 13 and is arranged at a position exposed to the air-conditioned space 1, for example, the cold and hot water radiation pipe 32 can also be arranged on the downstream side of the plane formed by the plurality of air-blowing gaps 22 in the direction of the flowing air Q0, and all the cold and hot water radiation pipes 32 can be arranged on the same plane.

[0246] Alternatively, a plurality of cold and hot water radiation pipes 32 can be respectively arranged in the space formed in the gap between adjacent air-blowing nozzles 13. In such a case, all the cold and hot water radiation pipes 32 can be arranged on the same plane or on different planes. Even so, there are no obstacles between the cold and hot water radiation pipes 32 and the air-conditioned space 1, so heat radiation can be promoted. Therefore, the thermal comfort based on radiant heat can be further improved.

[0247] In addition, in the radiant air-conditioning system 100 of the first embodiment, the tube group disposed between the blowing nozzles 13 is composed of four tubes, but this is not limiting. As long as at least each tube is connected to the water supply pipe 33 and the drain pipe 34 and the number of connected tubes is the same, the number of tubes constituting the tube group can be an even number such as two, six, or eight, for example.

[0248] In addition, in the radiant air-conditioning system 100 of the first embodiment, the air supply device 11 is disposed offset with respect to the ceiling surface constituting the conditioned space 1, and the blown air Q0 from the blowing nozzle 13 is blown in the direction from the ceiling surface toward the ground, but this is not limiting. For example, the air supply device 11 can also be disposed offset with respect to the side wall surface of the conditioned space 1 and configured such that the blown air Q0 from the blowing nozzle 13 is blown toward the opposite side wall surface. In this way, the guiding air Q1 can also be widely sucked from the guiding space 2 between the side wall surface and the blowing nozzle 13, and stable air supply to the opposite side wall surface can be achieved.

[0249] In addition, in the radiant air-conditioning system 100 of the first embodiment, the material of the blowing nozzle is a material such as aluminum that is easy to conduct heat, but this is not limiting. For example, by using a raw material such as resin that is not easy to conduct heat, heat conduction to the air can also be suppressed, heat radiation from the tube itself can be increased, and thus the balance of the air conditioner can be adjusted.

[0250] (Second Embodiment)

[0251] As a prior art, there is known a radiant air-conditioning system using a radiant panel, which buries a plurality of tubes through which a heat medium such as cold and hot water flows in the panel and air-conditions a room or the like by heat radiation (for example, Patent Document 1).

[0252] In the existing radiant air-conditioning system, almost no convective heat conduction is generated by the air circulating in the space, so it is not possible to utilize an object generating cooling heat to cool the space, and the comfort cannot be improved.

[0253] In the following embodiments of the present invention, a radiant air-conditioning system capable of improving the thermal comfort of a space is provided.

[0254] A radiant air-conditioning system according to one embodiment of the present invention includes: a plurality of blowout nozzles each having a slit-shaped blowout port; a blower that supplies air to the interiors of the plurality of blowout nozzles; a radiant heat generation unit having a plurality of tubes that generate radiant heat to an air-conditioned space by allowing a refrigerant to pass therethrough. The plurality of blowout nozzles are arranged side by side with gaps such that their respective blowout ports are located in the same plane to form a blowing surface. Guided air guided by the blown air blown from the plurality of blowout nozzles passes through the gaps. The plurality of tubes constituting the radiant heat generation unit are provided at positions on sides that are on both sides with respect to the respective blowout directions of the plurality of blowout nozzles. The plurality of tubes are configured to be arranged side by side in a direction perpendicular to the blowing surface on the respective sides of the plurality of blowout nozzles, the refrigerant flows into the interiors from one side of the respective end portions of the plurality of blowout nozzles, turns back at the end portions on the other side of the plurality of blowout nozzles, and flows out from one side of the plurality of blowout nozzles, and the number of inflow tubes for supplying the refrigerant to one side of the plurality of blowout nozzles is larger than the number of outflow tubes for supplying the refrigerant to one side of the plurality of blowout nozzles.

[0255] According to the present invention, a radiant air-conditioning system capable of improving the thermal comfort of a space can be provided.

[0256] A radiant air-conditioning system according to one embodiment of the present invention includes: a plurality of blowout nozzles each having a slit-shaped blowout port; a blower that supplies air to the interiors of the plurality of blowout nozzles; a radiant heat generation unit having a plurality of tubes that generate radiant heat to an air-conditioned space by allowing a refrigerant to pass therethrough. The plurality of blowout nozzles are arranged side by side with gaps such that their respective blowout ports are located in the same plane to form a blowing surface. Guided air guided by the blown air blown from the plurality of blowout nozzles passes through the gaps. The plurality of tubes constituting the radiant heat generation unit are respectively provided at positions on sides that are on both sides with respect to the respective blowout directions of the plurality of blowout nozzles. The plurality of tubes are configured to be arranged side by side in a direction perpendicular to the blowing surface on the respective sides of the plurality of blowout nozzles, the refrigerant flows into the interiors from one side of the respective end portions of the plurality of blowout nozzles, turns back at the end portions on the other side of the plurality of blowout nozzles, and flows out from one side of the plurality of blowout nozzles, and the number of inflow tubes for supplying the refrigerant to one side of the plurality of blowout nozzles is larger than the number of outflow tubes for supplying the refrigerant to one side of the plurality of blowout nozzles.

[0257] According to such a structure, the radiant heat generating portion provided on the inner side of the side surface of the blowing nozzle exchanges heat with the air flowing inside the blowing nozzle through convective heat conduction, and exchanges heat with the side surface of the blowing nozzle in contact therewith through heat conduction. In addition, since the radiant heat generating portion is divided by a plurality of tubes, the surface area can be increased, and heat exchange with the air flowing inside the blowing nozzle or the blowing nozzle can be promoted. Further, in the plurality of tubes constituting the radiant heat generating portion, the temperature difference between the refrigerant flowing therethrough and the air flowing inside the blowing nozzle or the blowing nozzle is larger in the inflow tube through which the refrigerant flows into one side of the blowing nozzle than in the outflow tube through which the refrigerant flows out. Therefore, with respect to the plurality of tubes constituting the radiant heat generating portion, by making the number of inflow tubes through which the refrigerant flows in larger than the number of outflow tubes through which the refrigerant flows out, as compared with the case where the number of inflow tubes through which the refrigerant flows in is less than or equal to the number of outflow tubes through which the refrigerant flows out, heat exchange can be promoted. On the other hand, the air (guided air) guided to the gap of the blowing nozzle exchanges heat with the blowing nozzle and becomes integrated with the blown air from the blowing nozzle, and thus is sent to the air-conditioned space as a planar uniform flow with a low wind speed.

[0258] Therefore, it is possible to realize air conditioning in which temperature deviation or air flow feeling is suppressed in the entire air-conditioned space, and a space without unevenness in the felt temperature can be realized. That is, it is possible to configure a radiant air conditioning system that can improve the thermal comfort of the space.

[0259] In addition, the radiant air conditioning system of the present invention may also be configured such that the blower conveys air from one side of each of the two end portions of each of the plurality of blowing nozzles into the inside of each of the plurality of blowing nozzles.

[0260] According to such a structure, further, although the air flowing inside the blowing nozzle flows from the air flowing in from one end side, which is one side of the two end portions, toward the other end side, a part of the air blows out from the slit-shaped air outlet into the air-conditioned space. That is, the air volume of the air flowing inside the blowing nozzle gradually decreases as it goes from one end side to the other end side. In addition, the refrigerant flowing in from one end side of the blowing nozzle exchanges heat with the air flowing inside the blowing nozzle or the blowing nozzle while flowing toward the other end side, so the temperature difference between the outflow tube and the air flowing inside the blowing nozzle or the blowing nozzle is larger near the one end side than near the other end side. Therefore, by causing a larger air volume to flow around the inflow tube having a larger temperature difference from the air flowing inside the blowing nozzle, heat exchange between the radiant heat generating portion and the blown air is promoted, and the thermal comfort can be improved.

[0261] In addition, in the radiant air conditioning system of the present invention, the inflow tube may be arranged at a position closer to the air outlet side than the position of the outflow tube in a direction perpendicular to the air supply surface.

[0262] Depending on the positional relationship with the occupant, there may be other blowing nozzles between a part of the blowing nozzle on the side opposite to the blowout port and the occupant, and it is possible that heat exchange based on radiation is not performed. If it is weakly formed into such a structure, then the inflow pipe with a larger temperature difference from the refrigerant flowing inside than the air flowing inside the blowing nozzle or the temperature of the blowing nozzle is located closer to the occupant, so heat exchange is promoted at a part of the blowing nozzle closer to the occupant. Therefore, it is possible to promote heat exchange based on radiation between the blowing nozzles arranged side by side and the occupant staying in the air-conditioned space, and the thermal comfort can be improved.

[0263] In addition, in the radiant air-conditioning system of the present invention, it may also be configured such that a plurality of pipes are symmetrically arranged with respect to a plane perpendicular to the air supply surface and passing through the center of the blowout port.

[0264] According to such a structure, it is possible to further suppress the deviation of the temperature distribution on the surface of the blowing nozzle and the temperature distribution of the air flowing inside the blowing nozzle, and the heat exchange efficiency is improved. In addition, the smaller the deviation of the temperature distribution, the larger the average temperature difference from the refrigerant, so the heat exchange amount increases. Therefore, the thermal comfort of the air-conditioned space can be improved.

[0265] Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. In addition, the following embodiments are examples of embodying the present invention and do not limit the technical scope of the present invention. In addition, the drawings described in the embodiments are schematic drawings, and the ratios of the sizes and thicknesses of the respective constituent elements in each drawing do not necessarily reflect the actual size ratios.

[0266] First, with reference to Figure 12 and Figure 13 , the radiant air-conditioning system 400 of the second embodiment will be described.

[0267] Figure 12 is a perspective view showing the basic structure of the radiant air-conditioning system 400 of the second embodiment of the present invention. Figure 13 is a side view showing the overall configuration of the radiant air-conditioning system 400.

[0268] In addition, in Figure 12 and Figure 13 , only the main devices and representative structures constituting the system are shown. For the detailed structures of the respective devices, refer to Figure 14 The subsequent figures will be described later.

[0269] The radiant air-conditioning system 400 is a system that undertakes the function of improving the thermal environment of the living space (the air-conditioned space 301), that is, the function of improving the thermal comfort of the living space, through a combination of air flow, heat exchange, and thermal radiation.

[0270] Specifically, asFigure 12 As shown, the radiant air-conditioning system 400 is configured to include a blower device 311 and a radiant heat generation device 331.

[0271] The blower device 311 is configured to include: blower units 312a and 312b collectively referred to as blower unit 312; outlet nozzles 313a, 313b, 313c, and 313d collectively referred to as outlet nozzle 313; blower boxes 314a and 314b collectively referred to as blower box 314; blowers 315a and 315b collectively referred to as blower 315; and outlet slits 322a, 322b, 322c, and 322d collectively referred to as outlet slit 322 (see Figure 14 ).

[0272] The radiant heat generation device 331 is configured to include chilled / hot water radiant pipes 332a, 332b, 332c, and 332d collectively referred to as chilled / hot water radiant pipes 332, a water supply pipe 333, a drain pipe 334, a chilled / hot water generation cooler 335, a water supply pump 336, an outdoor unit 342, and a refrigerant circuit 343.

[0273] The radiant air-conditioning system 400 is installed in an air-conditioned space 301 that is part of a residence. Here, the air-conditioned space 301 refers to a space used as a place where occupants live inside, including a living room, a dining room, a bedroom, a separate room, or a children's room, etc. In addition, it does not include spaces where occupants do not move inside, such as a closet, a cloakroom, or a mechanical room.

[0274] In addition, the air-conditioned space 301 is formed as a closed space by walls including a ceiling surface, a floor surface, and side wall surfaces, but in Figure 12 , for the purpose of easily observing the configuration of the radiant air-conditioning system 400 installed inside the air-conditioned space 301, the side wall surface and the ceiling surface on the front side of the drawing are shown perspectively.

[0275] The radiant heat generation device 331 includes chilled / hot water radiant pipes 332, a water supply pipe 333, a drain pipe 334, a chilled / hot water generation cooler 335, a water supply pump 336, an outdoor unit 342, and a refrigerant circuit 343. In addition, the radiant heat generation device 331 corresponds to the "radiant heat generation part" in the claims.

[0276] The chilled / hot water generation cooler 335 is a device for generating water for the generation of air-conditioning radiant heat for the air-conditioned space 301, and includes: a refrigerant coil 335a as a mechanism for heating and cooling water inside; a tank for storing water for heating and cooling; and a mechanism for controlling the temperature of water. And the refrigerant coil 335a is connected to the outdoor unit 342 via a refrigerant circuit 343 for refrigerant flow.

[0277] The cold and hot water generating cooler 335 is connected to the water supply pipe 333 and the drain pipe 334, and is configured such that the water passing through the inside contacts the refrigerant coil 335a. That is, in the cold and hot water generating cooler 335, the temperature of the water can be adjusted by changing the temperature of the refrigerant coil 335a.

[0278] The water supply pipe 333 is a pipe for delivering the water whose temperature has been adjusted by the cold and hot water generating cooler 335 to the cold and hot water radiation pipe 332. The water supply pipe 333 is connected in sequence from the upstream side to the cold and hot water generating cooler 335, the water supply pump 336, and the cold and hot water radiation pipe 332.

[0279] The drain pipe 334 is a pipe for returning the water that has circulated in the cold and hot water radiation pipe 332 back to the cold and hot water generating cooler 335. The drain pipe 334 is connected in sequence from the upstream side to the cold and hot water radiation pipe 332 and the cold and hot water generating cooler 335.

[0280] The water supply pump 336 is a pump that generates a water flow for heating and cooling to be delivered to the cold and hot water radiation pipe 332.

[0281] In addition, in the present embodiment, the water supply pipe 333, the drain pipe 334, the cold and hot water generating cooler 335, and the water supply pump 336 are arranged outside the air-conditioned space 301, but they may also be arranged inside the air-conditioned space 301 beyond the ceiling surface, the floor surface, and the side wall surfaces constituting the air-conditioned space 301. As long as they are arranged at any position that does not interfere with the living space, the functions and effects of the present invention are not affected.

[0282] The outdoor unit 342 is an outdoor unit provided in the outdoor space and has a heat pump 344 composed of a compressor 342a, an expander 342b, an outdoor heat exchanger 342c, a blower fan 342d, and a four-way valve 342e. As the outdoor unit 342, an outdoor unit with a general structure is used, so the detailed description of each device (the compressor 342a, the expander 342b, the outdoor heat exchanger 342c, the blower fan 342d, and the four-way valve 342e) is omitted.

[0283] The heat pump 344 is connected to the refrigerant coil 335a via a refrigerant circuit 343, and the outdoor unit 342 adjusts the temperature of the refrigerant flowing in the refrigerant coil 335a by controlling the heat pump 344.

[0284] The refrigerant coil 335a functions as an absorber or a radiator in a refrigeration cycle including a compressor, a radiator, an expander, and an absorber, and is configured such that when the refrigerant introduced from the outdoor unit 342 flows inside, heat absorption (cooling) or heat dissipation (heating) occurs.

[0285] A four-way valve 342e is connected to the refrigeration cycle including the refrigerant coil 335a, so in the hot and cold water generating cooler 335, it is possible to switch between a cooling mode in which the refrigerant flows in the first direction through the four-way valve 342e to cool the water and a heating mode in which the refrigerant flows in the second direction through the four-way valve 342e to heat the water.

[0286] Here, the first direction is the direction in which the refrigerant flows through the compressor 342a, the outdoor heat exchanger 342c, the expander 342b, and the refrigerant coil 335a in sequence. In addition, the second direction is the direction in which the refrigerant flows through the compressor 342a, the refrigerant coil 335a, the expander 342b, and the outdoor heat exchanger 342c in sequence. In the refrigerant coil 335a, the introduced water can be cooled or heated.

[0287] The hot and cold water radiation pipe 332 is a hollow component used to change the temperature of the air occupying the air-conditioned space 301 or to generate heat radiation between the wall surface constituting the air-conditioned space 301 and the objects (furniture or human body, etc.) existing in the air-conditioned space 301, and is configured to allow water to pass through the inside. The hot and cold water radiation pipe 332 is connected to the water supply pipe 333 and the drain pipe 334, respectively, and is configured to introduce the temperature-controlled water from the water supply pipe 333, and the water flowing in the hot and cold water radiation pipe 332 is discharged to the drain pipe 334.

[0288] The hot and cold water radiation pipe 332 is composed of a plurality of branched pipes and is disposed inside each of the plurality of air supply units 312a and 312b. The plurality of hot and cold water radiation pipes 332a, 332b, 332c, and 332d are each made of the same material, and it is particularly preferred to use a raw material with a high emissivity such as resin on its surface, but other raw materials may also be used instead.

[0289] For details of the connection relationship between the hot and cold water radiant pipe 332, the water supply pipe 333, and the drain pipe 334, etc., refer to Figure 16 Described later.

[0290] Next, refer to Figure 14 , Figure 15A and Figure 15B , the detailed structure of the air supply device 311 is described.

[0291] Figure 14 It is a perspective view showing an installation image of the air supply device 311 in the radiation air conditioning system 400. Figure 15A 4 is a perspective view showing the arrangement relationship between the blowing nozzle 313a and the hot and cold water radiant pipe 332a constituting the radiant air conditioning system 400. Figure 15BIt is a cross-sectional view showing the arrangement relationship between the blowout nozzles 313a and the cold / hot water radiation pipes 332a that make up the radiant air conditioning system 400.

[0292] The air supply device 311 is a device that supplies a planar uniform flow of gentle wind speed from the air supply surface 324 (refer to Figure 18 ) to the air-conditioned space 301. In the present embodiment, as Figure 12 shown, the air supply device 311 is arranged near the ceiling surface of the air-conditioned space 301, and supplies a planar uniform flow of gentle wind speed from the ceiling surface of the air-conditioned space 301 towards the ground.

[0293] As Figure 14 shown, the air supply device 311 has a plurality of air supply units 312a, 312b. In this way, by dividing the air supply device 311 into a plurality of air supply units 312a, 312b, the air supply mechanism in any air-conditioned space 301 can be represented by the combination of the air supply units 312a, 312b, and the generalization of the system can be achieved. In addition, since the air supply unit 312a and the air supply unit 312b have equivalent constituent elements, the following will take the air supply unit 312a as an example for description.

[0294] The air supply unit 312a includes blowout nozzles 313a, 313b, a fan casing 314a, and a fan 315a. In addition, the constituent components that make up the air supply unit 312a do not necessarily have to be the above-described configuration, as long as they include at least one fan, a blowout nozzle, and an air passage that connects the fan and the blowout nozzle.

[0295] The fan casing 314a includes an air supply chamber 318a, a partition wall 319a, and a suction port 321a.

[0296] The fan casing 314a is a housing for collecting and incorporating the equipment and air passages required to supply the circulating air in the air-conditioned space 301 and supply it to the blowout nozzles 313 (blowout nozzles 313a, 313b).

[0297] The fan casing 314a is arranged in the air-conditioned space 301 in a manner of being built into the suspended ceiling inside the room. In addition, the fan casing 314a does not necessarily need to be built into the suspended ceiling of the air-conditioned space 301. For example, it can also be arranged to be suspended from the ceiling surface or fixed to the side wall surface and exposed in the air-conditioned space 301.

[0298] The partition wall 319a divides the interior of the fan casing 314a into two spaces, a space including the suction port 321a and the fan 315a, and an air supply chamber 318a that is a space connected to the blowout nozzles 313 (blowout nozzles 313a, 313b). In addition, the partition wall 319a has an opening communicating with the fan outlet 323a of the fan 315a.

[0299] The air supply chamber 318a is a space that temporarily accumulates the circulated air blown by the blower 315a, and serves to equalize the distribution of the air supplied from the blower 315a and make the air volumes supplied to the blowing nozzles 313a and 313b equal.

[0300] In addition, inside the blower box 314a, the blower 315a and the air supply chamber 318a are separated by a partition wall 319a and communicate with each other via a blower air outlet 323a.

[0301] The air supply chamber 318a communicates with the blowing nozzles 313a and 313b respectively on the surfaces opposite to the surface connected to the blower 315a, and continuously formed air paths from the blower 315a to the blowing nozzle 313a and from the blower 315a to the blowing nozzle 313b are formed respectively.

[0302] The suction port 321a is a rectangular opening provided on the lower surface of the blower box 314a in a manner that communicates the air-conditioned space 301 with the blower box 314a.

[0303] The blower 315a creates a pressure difference between the air-conditioned space 301 and the blower box 314a, takes in the circulated air from the air-conditioned space 301 through the suction port 321a, and blows it into the air supply chamber 318a. The blower 315a includes an impeller 316a and a motor 317a, and blows air by driving the impeller 316a using the motor 317a. In addition, the impeller 316b and the motor 317b mounted on the blower 315b are the same as the impeller 316a and the motor 317a respectively, so the description thereof is omitted.

[0304] The plurality of blowing nozzles 313 (blowing nozzles 313a, 313b) serve to blow the air blown by the blower 315a into the air-conditioned space 301, and are respectively substantially rectangular parallelepiped-shaped (including rectangular parallelepiped-shaped) components having blowing slits 322 (blowing slits 322a, 322b).

[0305] In the present embodiment, since the blowing nozzles 313a and 313b have equivalent constituent elements, the blowing nozzle 313a will be described as an example here. The plurality of blowing nozzles 313 (blowing nozzles 313a, 313b) are respectively as Figure 12 shown, one of the two surfaces with the smallest cross-sectional area among the six surfaces is in contact with the blower box 314a, and the blowing nozzles 313 (blowing nozzles 313a, 313b) and the blower box 314a communicate with each other via holes for air passage.

[0306] In addition, as Figure 13As shown, the other of the two faces with the smallest cross-sectional area among the six faces of the blowing nozzle 313a penetrates the side wall surface of the air-conditioned space 301 (the side wall surface opposite to the side wall surface in contact with the blower box 314a) and is arranged inside the ceiling part.

[0307] In addition, the four faces other than the two faces with the smallest cross-sectional area among the six faces of the blowing nozzle 313a do not come into contact with the blower box 314a, the ceiling surface of the air-conditioned space 301, and the adjacent blowing nozzle 313 (the blowing nozzle 313b in the case of the blowing nozzle 313a), and are arranged in a state where the air occupying the air-conditioned space 301 can pass through the periphery of the blowing nozzle 313. In the present embodiment, the space through which the air passes around the blowing nozzle 313 communicating with the air-conditioned space 301 is defined as the guiding space 302.

[0308] More specifically, as Figure 15A and Figure 15B shown, a blowing slit 322a is formed in the face of the six faces of the blowing nozzle 313a facing the ground direction.

[0309] The blowing slit 322a is an air outlet for blowing the air supplied through the air supply chamber 318a and the blowing nozzle 313a into the air-conditioned space 301, and is formed in a slit shape along the direction in which the blowing nozzle 313a extends from the blower box 314a (corresponding to Figure 14 the left-right direction in

[0310] In addition, as Figure 15B shown, the width of the blowing slit 322a is small relative to the face on which the blowing slit 322a is formed, and the cavity part inside the blowing nozzle 313a has a structure that gradually narrows from top to bottom in a manner consistent with the width of the blowing slit 322a.

[0311] If the length of the blowing nozzle 313a in the left-right direction in Figure 14 is defined as the blowing nozzle length, this length is sufficiently long relative to the length of one side of the contact surface of the blowing nozzle 313a with the blower box 314a. In the contact surface with the blower box 314a, it is preferable that the length in the normal direction (the up-down direction) of the blowing slit 322a is longer than the length in the tangential direction. For example, when the length of the side of the contact surface of the blowing nozzle 313a with the blower box 314a is 17 cm in the longitudinal direction and 4 cm in the transverse direction, the blowing nozzle length is set to about 2 m.

[0312] In addition, as Figures 12 to 14As shown, the blowing nozzles 313a and 313b are arranged side by side in a substantially parallel (including parallel) manner such that the blowing slits 322a and 322b are located in the same plane substantially parallel to the ceiling surface, and a predetermined interval (e.g., 16 cm) is provided between the blowing nozzle 313a and the blowing nozzle 313b. By forming such a structure, the guiding space 302 between the blowing nozzle 313a and the blowing nozzle 313b can be sufficiently ensured, and an air flow in a wide range of blowing directions can be generated.

[0313] In addition, the air supply units 312a and 312b are arranged side by side such that the same predetermined interval (e.g., 16 cm) is also formed between the blowing nozzle 313b of the air supply unit 312b and the blowing nozzle 313c of the air supply unit 312b.

[0314] In addition, the blowing nozzle 313a is made of a material such as aluminum that is easily heat-conductive, and the air flowing through the hollow interior (the blowing air Q0 described later) and the air passing through the gap (the guiding air Q1 described later) can easily exchange heat with the cold and hot water radiation pipe 332a via the side member.

[0315] In addition, the air supply unit 312b has the same constituent elements as the air supply unit 312a, and the blowing nozzles 313c and 313d (the blowing slits 322c and 322d) respectively correspond to the blowing nozzles 313a and 313b (the blowing slits 322a and 322b) in the air supply unit 312a.

[0316] As Figure 14 shown, all of the blowing slits 322a, 322b, 322c, and 322d are located in the same plane substantially parallel to the ceiling surface (including parallel). That is, the blowing slits 322 (the blowing slits 322a, 322b, 322c, and 322d) of the blowing nozzles 313a, 313b, 313c, and 313d can be said to be arranged side by side with gaps in a manner located in the same plane to form the blowing surface 324 (also refer to Figure 18 ).

[0317] Next, with reference to Figure 16 , the detailed structure of the radiant heat generating device 331 will be described.

[0318] Figure 16 is a schematic connection diagram showing the connection relationship of the cold and hot water radiation pipe 332 and other related components in the radiant heat generating device 331. In addition, in Figure 16Among them, the structures inside the air supply units 312a and 312b and the arrangements of the cold and hot water radiation pipes 332 inside the blowing nozzles 313a, 313b, 313c, and 313d are equivalent. Therefore, here, only the blowing nozzle 313a is illustrated as an example. In addition, the refrigerant circuit 343 and the outdoor unit 342 are not illustrated and are omitted.

[0319] The radiant heat generating device 331 is a device that air-conditions the air-conditioned space 301 by using the radiant heat of a plurality of pipes through which a refrigerant such as cold and hot water flows.

[0320] In the present embodiment, the radiant heat generating device 331 functions to adjust the temperature of the blown air Q0 blown out from the air supply device 311 and to impart radiant heat to the people and objects present in the air-conditioned space 301 via the blowing nozzle 313.

[0321] Specifically, as Figure 16 shown, the radiant heat generating device 331 is configured to include a cold and hot water radiation pipe 332 (here, only the cold and hot water radiation pipe 332a is illustrated), a water supply pipe 333, a drain pipe 334, a cold and hot water generating cooler 335, and a water supply pump 336.

[0322] The cold and hot water radiation pipe 332a has a plurality of pipes of the same number on both side surfaces with respect to the blowing direction of the blowing nozzle 313a. In addition, on one side surface of the blowing nozzle 313a, a plurality of cold and hot water radiation pipes 332 arranged side by side in a direction perpendicular to the air supply surface 324 are arranged such that the distances between all adjacent pipes are the same.

[0323] For example, Figure 16 the pipes 332a1 to 332a4 are located on the same surface (one (front side) surface of the blowing nozzle 313a) and are arranged at a certain distance in a direction perpendicular to the air supply surface 324. Their distances are set such that, for example, the distance between adjacent pipes is 10 mm.

[0324] In addition, Figure 16 the pipes 332a5 to 332a8 also exist on the same surface (the other (depth side) surface of the blowing nozzle 313) and are arranged at a certain distance in a direction perpendicular to the air supply surface 324.

[0325] In the present embodiment, the cold and hot water radiation pipe 332a constitutes a pipe group having a total of eight straight pipes (pipes 332a1, 332a2, 332a3, 332a4, 332a5, 332a6, 332a7, 332a8) on two opposite side surfaces of one blowing nozzle 313a.

[0326] In addition, as described above, the cold and hot water radiation pipes 332b, 332c, 332d (not shown) respectively provided in the blowing nozzles 313b, 313c, 313d also have the same structure as the cold and hot water radiation pipe 332a.

[0327] Here, the structure of these pipe groups will be described starting from the upstream side of the refrigerant flow.

[0328] First, at one end of the water supply pipe 333 connecting pipe 332a2. The pipe 332a2 connected to the water supply pipe 333 penetrates the blower casing 314a and is connected to the inside of the blowing nozzle 313a from the side communicating with the blower casing 314a at both ends of the blowing nozzle 313a.

[0329] The pipe 332a2 connected to the blowing nozzle 313a from one side is arranged on one of the two side surfaces ( Figure 16 the front side in ) in the blowing direction of the blowing nozzle 313a. And the pipe 332a2 branches side by side with the pipes 332a3, 332a4 near the side communicating with the blower casing 314a, and the pipes 332a2, 332a3, 332a4 are arranged at a certain interval in the direction (vertical direction) perpendicular to the air supply surface 324 on one side surface.

[0330] The pipes 332a2, 332a3, 332a4 connected side by side extend from near one end of the blowing nozzle 313a to near the other end. Near the other end, the pipes 332a2, 332a3, 332a4 are connected and connected to the other end of the pipe 332a1.

[0331] The pipe 332a1 extends from near the other end to near one end, and is arranged on one side surface of the blowing nozzle 313a at a position farther from the blowing slit 322a than the pipes 332a2, 332a3, 332a4 and at a certain interval in the direction perpendicular to the air supply surface 324 with the pipes 332a2, 332a3, 332a4.

[0332] That is, the water as the refrigerant flows in from the side of the two ends of the blowing nozzle 313a that conveys air to the inside of the blowing nozzle 313a through the pipe 332a2, branches and flows side by side with the pipes 332a3, 332a4 inside the blowing nozzle 313a, is connected to the pipe 332a1 at the end on the opposite side (the other side) of the blowing nozzle 313a and turns back, and flows out from one side of the blowing nozzle 313a. At this time, the pipes 332a2, 332a3, 332a4 are classified as "inflow pipes", and the pipe 332a1 is classified as an "outflow pipe".

[0333] One end of the pipe 332a1 is provided on the other side surface of the blowing nozzle 313a (Figure 16 One end of the pipe 332a6 (on the side in the depth direction) is connected.

[0334] Moreover, on the other side of the blowing nozzle 313a, the pipes 332a5, 332a6, 332a7, and 332a8 are symmetrically arranged in a plane perpendicular to the air supply surface 324 and passing through the reference plane F which is the center when observing the blowing slit 322a in the long side direction, corresponding to the pipes 332a1, 332a2, 332a3, and 332a4 arranged on one side (refer to Figure 15B ). The pipe 332a5 penetrates the air conditioner casing 314a from the blowing nozzle 313a and is connected to the drain pipe 334.

[0335] By configuring in this way, the cold and hot water radiation pipes 332a form a single closed loop connected to the same water supply pipe 333 and drain pipe 334. Thus, the supply paths of the cold and hot water serving as heat sources can be gathered into one, so that the simplification of the equipment can be achieved.

[0336] In addition, regarding the connection relationship of these cold and hot water radiation pipes 332, it is not necessarily required to connect them in this order, as long as the conditions (a) at least one pipe is connected to the water supply pipe 333 and the same number of pipes connected to the water supply pipe 333 are connected to the drain pipe 334, and (b) when the pipes arranged on different sides are directly connected to each other, one of them is connected to the water supply pipe 333 and the other is connected to the drain pipe 334 are satisfied.

[0337] For example, it can also be configured such that the pipe 332a2 and the pipe 332a6 are connected to the water supply pipe 33, and the pipe 332a1 and the pipe 332a5 are connected to the drain pipe 334.

[0338] In order to reliably supply and drain water to and from all the cold and hot water radiation pipes 332a, 332b, 332c, and 332d, the water supply pipe 333 and the drain pipe 334 are preferably pipes with a diameter thicker than that of the cold and hot water radiation pipes 332a, 332b, 332c, and 332d, and are configured to handle a large flow rate.

[0339] For example, when the diameter of all the pipes included in the cold and hot water radiation pipes 332 is 4 mm, the water supply pipe 333 and the drain pipe 334 respectively use pipes with a diameter of about 20 mm. In addition, although the thickness of the water supply pipe 333 and the drain pipe 334 is marked as "diameter", it is not necessarily required that the cross-section is circular. For example, pipes with a rectangular cross-sectional shape can also be used.

[0340] The above is the structure of the radiation air-conditioning system 400.

[0341] Next, referring to Figure 17 and Figure 18, the air flow in the radiant air conditioning system 400 will be described.

[0342] Figure 17 It is a top view showing the air flow inside the air supply device 311. Figure 18 It is a sectional view showing the flow directions of the blown air Q0 from the blowout nozzles 313 of the air supply device 311 and the guiding air Q2 generated near the blowout nozzles 313.

[0343] As described above, the air supply units 312a and 312b that make up the air supply device 311 have equivalent constituent elements, so the air supply unit 312a will be taken as an example for description here.

[0344] As Figure 17 shown, by operating the fan 315a, the air in the conditioned space 301 flows into the interior of the fan housing 314a as the intake air A0a from the intake port 321a. The intake air A0a is sucked in by the fan 315a and blown out as the air A1a from the fan outlet 323a, temporarily accumulating in the air supply chamber 318a, and is sent to the blowout nozzles 313a and 313b in sequence by the push from the fan 315a.

[0345] Air A2a and A2b are respectively supplied to the blowout nozzles 313a and 313b.

[0346] In addition, the relationship of each air volume is not strictly specified, but it is preferably configured such that the blowout nozzles 313a and 313b are symmetric with respect to the center line of the air flow direction in the air supply chamber 318a, so that the air volume of air A2a = the air volume of air A2b.

[0347] Similarly, in the air supply unit 312b, air A2c and A2d are respectively supplied to the blowout nozzles 313c and 313d.

[0348] And, air A2a, A2b, A2c, and A2d flow in the long side direction of their respective nozzles, and a part of them serves as the blown air Q0 (refer to Figure 18 ) and flows out from the blowout slits 322a, 322b, 322c, and 322d in the Figure 17 depth direction in

[0349] In addition, although not described in Figure 17 , in order to make the air volume flowing out from the blowout slit 322 constant regardless of the long side direction of the nozzle, fins for rectification or the like can also be provided inside the blowout nozzle 313.

[0350] As Figure 18As shown, the air sent to the blowing nozzles 313a, 313b, 313c, and 313d is discharged as blowing air Q0 from the blowing slits 322a, 322b, 322c, and 322d into the conditioned space 301 respectively.

[0351] Here, as described above, the blowing nozzles 313a, 313b, 313c, and 313d discharge the same amount of air volume from the blowing slits 322a, 322b, 322c, and 322d respectively. Therefore, the blowing air Q0 has a wind speed distribution with peaks at each gap of the blowing slits 322, being evenly distributed in the side-by-side direction of the plurality of blowing nozzles 313. By making use of the slit-shaped air outlets, the blowing air Q0 has the property of having a relatively high wind speed with respect to the air volume, so a highly straight-flowing air current is generated in the blowing direction.

[0352] In addition, due to the blowing air Q0, a pressure difference is generated between the periphery of the blowing nozzle 313 and the guiding space 302, generating guiding air Q1 that flows into the guiding space 302 between the plurality of blowing nozzles 313 and the ceiling surface. Here, since the guiding air Q1 is the air introduced into the guiding space 302 having a cross-sectional area much larger than that of the blowing slit 322, it has the property of having a relatively small wind speed with respect to the air volume. Generally, the relationship of the air volume is that the air volume of the blowing air Q0 < the air volume of the guiding air Q1 holds.

[0353] Next, with reference to Figure 12 、 Figure 13 and Figure 16 , the flow of water circulating inside the radiant heat generating device 331 will be described.

[0354] First, as shown in Figure 12 、 Figure 13 and Figure 16 , the water introduced into the cold and hot water generating cooler 335 is heated or cooled inside the cold and hot water generating cooler 335. Here, heating or cooling is performed, for example, by a heat pump method using a refrigerant.

[0355] And, the heated or cooled cold and hot water is temporarily stored in a water tank or the like built into the cold and hot water generating cooler 335, and by driving the water supply pump 336, water is sent to the water supply pipe 333 at an arbitrary flow rate. After that, the cold and hot water supplied to the water supply pipe 333 is distributed and transported to the plurality of cold and hot water radiant pipes 332a, 332b, 332c, 332d, circulates near the sides of the plurality of blowing nozzles 313a, 313b, 313c, 313d of the air blowing device 311, and is recovered to the drain pipe 334.

[0356] The flow of water in the air supply device 311 will be described in detail. Since the air supply units 312a and 312b have equivalent components, the air supply unit 312a will be taken as an example for description here.

[0357] As Figure 13 and Figure 16 shown, after water is transported from the water supply pipe 333 to the pipe 332a2, it flows in the pipe 332a2 that penetrates the air supply box 314a, and flows in from the side facing the blowing nozzle 313a on the side where the blower box 314a communicates with the blowing nozzle 313a. After the water flows into the blowing nozzle 313a, it branches from one pipe 332a2 to three pipes 332a2, 332a3, and 332a4 side by side near one side of the blowing nozzle 313a, and flows from one side to the vicinity of the end on the other side in one of the two side surfaces (the front side in Figure 16 ) with respect to the blowing direction of the blowing nozzle 313a.

[0358] And, after the water is connected from the three pipes 332a2, 332a3, and 332a4 to one pipe 332a1 near the end on the opposite side, it flows back in a way that the flowing direction is opposite (from the other side to one side). The water becomes a direction opposite to the flow into the blowing nozzle 313a, passes through the pipe 332a1 from the vicinity of the end on the opposite side (the other side), and flows to the side near where the blower box 314a communicates with the blowing nozzle 313a.

[0359] And, after the water is connected to the pipe 332a6 near one side, the flowing direction becomes the opposite direction, and this time it turns back in a way that it flows from one side surface of the blowing nozzle 313a to the other side surface. The flow of water on the other side surface of the blowing nozzle 313a is symmetric with the flow of water on one side surface with respect to the plane (reference plane F: refer to Figure 15B ) that is perpendicular to the air supply surface 324 and passes through the center of the blowing slit 322a.

[0360] That is, the water flows into through the pipe 332a6 on the other side surface, and flows out of the blowing nozzle 313a through the pipe 332a5. After the water flows out of the blowing nozzle 313a through the pipe 332a5, it flows through the air supply box 314a and flows towards the drain pipe 334.

[0361] In addition, the flow of water in the blowing nozzle 313b is equivalent to the flow of water in the blowing nozzle 313a, and the flow of water flowing in the cold and hot water radiation pipe 332b is equivalent to the flow of water flowing in the cold and hot water radiation pipe 332a, so the description is omitted here.

[0362] The water recovered to the drain pipe 334 is successively sent to the cold and hot water generating cooler 335 and used as a heat source again. In this way, the water in the radiant heat generating device 331 is repeatedly used as a heat source, and the system can be completed with a small amount of water.

[0363] However, in the case where the water quality of the water flowing inside is worried about deteriorating due to the adhesion of scale to the piping section, etc., it is preferable to use a purification filter or set another path connected to a water supply pipe, etc. to ensure redundancy, and purify or replace the water.

[0364] In addition, the flow of water in the blowing nozzles 313c and 313d in the air blowing unit 312b is the same as the flow of water in the blowing nozzle 313a, respectively, so the description thereof is omitted here.

[0365] Next, the air conditioning effect of the conditioned space 301 based on the radiant air conditioning system 400 will be described by taking the use in the cooling period as an example.

[0366] In the radiant heat generating device 331, the water flowing into the cold and hot water generating cooler 335 at 25°C is cooled to 18°C and sent to the water supply pipe 333. After that, the cold water distributed to the plurality of cold and hot water radiant pipes 332 is gradually heated through heat exchange with the sucked air A0a to A2a inside the air blowing device 311 and heat exchange with the blowing nozzle 313a. And the water that becomes 25°C at the moment of being recovered from the cold and hot water radiant pipe 332 to the drain pipe 334 is sent to the cold and hot water generating cooler 335 again and cooled to 18°C, and such a cycle is repeated.

[0367] On the other hand, a part of the air in the conditioned space 301 flows into the fan casing 314a at 27°C, and exchanges heat with the cold water flowing in the cold and hot water radiant pipe 332 during the process of passing through the inside of the air blowing device 311, and is cooled to 24°C and blown out from the blowing slit 322 to the conditioned space 301.

[0368] When the air in the guiding space 302 flows between the plurality of blowing nozzles as the guiding air Q2, it exchanges heat with the blowing nozzle 313 cooled to 19°C, is cooled to 26°C, and then flows in the conditioned space 301 as an air flow with a substantially uniform temperature distribution while being mixed with the blowing air Q0. The cooled air is heated by the heat load (ventilation with external air, sunlight, heat storage of the wall, etc.) in the conditioned space 301, and the 27°C air flows into the fan casing 314a again. By repeating the above cycle, the radiant air conditioning system 400 air-conditions the conditioned space 301.

[0369] The heat transfer in the air blowing device 311 will be described in more detail.

[0370] Here, the heat transfer in the air supply units 312a and 312b is the same, so the air supply unit 312a will be taken as an example for explanation. Additionally, since the heat transfer in the blowing nozzles 313a and 313b is also the same, the blowing nozzle 313a will be taken as an example for explanation.

[0371] First, inside the blower box 314a, the cooled water flowing in the pipe 332a2 connected to the water supply pipe 333 and the water flowing in the pipe 332a5 connected to the drain pipe 334 exchange heat through convective heat conduction with the air flowing in from the air-conditioned space 301 via the pipe 332a2 and the pipe 332a5. Subsequently, the heat transfer between the water flowing in the radiant heat generation device 331 and the cold and hot water radiant pipe 332 is synonymous, so it is omitted.

[0372] Next, inside the blowing nozzle 313a, the cold and hot water radiant pipe 332a exchanges heat through convective heat conduction with the air A2a flowing inside the blowing nozzle 313a. At this time, the pipes 332a2 and 332a6 branch out side by side with the pipes 332a3, 332a4 and the pipes 332a7, 332a8 respectively. Therefore, the surface area of the inflow pipes flowing from the side facing the opposite side (the other side) of the side connected to the blower box 314a inside the blowing nozzle 313a is larger than the surface area of the outflow pipe (pipe 332a1) flowing from the side facing the opposite side (the other side) of the blowing nozzle 313a to the one side.

[0373] Therefore, compared with the case where the number of inflow pipes is less than or equal to the number of outflow pipes (for example, when the cold and hot water radiant pipe 332a does not branch inside the blowing nozzle 313a and the number of inflow pipes is the same as the number of outflow pipes), the surface area of the inflow pipes with a larger temperature difference from the air A2a in contact with the air A2a further increases, so more heat is exchanged. And the temperatures of the pipes 332a2, 332a3, 332a4, 332a6, 332a7, 332a8 gradually increase as they are farther away from the blower box 314a.

[0374] In addition, the air A2a flowing inside the blowing nozzle 313a flows into the air-conditioned space 301 through the blowing gap 322a, so inside the blowing nozzle 313a, the air volume passing through the cross-section parallel to the smallest surface of the blowing nozzle 313a gradually decreases as it is farther away from the blower box 314a.

[0375] Therefore, inside the blowing nozzle 313a, on the side of the blower box 314a, the colder cold and hot water radiant pipe 332a exchanges heat with the air A2a with a larger air volume, resulting in more heat transfer.

[0376] In addition, inside the blowing nozzle 313a, since heat exchange is carried out by heat conduction between the cold and hot water radiation pipe 332a and the side surface of the blowing nozzle 313a in contact with the cold and hot water radiation pipe 332a, the blowing nozzle 313a itself is cooled. Moreover, outside the blowing nozzle 313a, heat exchange is carried out by convective heat conduction between the cooled blowing nozzle 313a and the guiding air Q2 flowing around, and the air in the conditioned space 301 is cooled.

[0377] In addition, the cooled blowing nozzle 313a exchanges heat by radiation with objects having a temperature difference, such as the wall surface of the conditioned space 301 and the occupants. And by reducing the heat load on the wall surface and the occupants for cooling, it is easier to cool the air in the conditioned space 301.

[0378] The above is the description of the air conditioning effect of the conditioned space 301 based on the radiation air conditioning system 400.

[0379] Furthermore, the temperature change shown here is just an example, and it is not limited to this during the heating period. Additionally, when the temperature of the cold and hot water during the passage through the water supply pipe 333 is likely to change due to the external environment, there is a concern about insufficient capacity as a heat source or unevenness of the cold and hot water temperatures among the multiple cold and hot water radiation pipes 332a, 332b, 332c, 332d. In such a case, it is preferable to implement countermeasures such as using a material with high heat insulation for the water supply pipe 333.

[0380] As described above, according to the radiation air conditioning system 400 of the present embodiment, the following effects can be achieved.

[0381] (1) The radiant air-conditioning system 400 includes: a plurality of blowout nozzles 313 having slit-shaped blowout ports (blowout slits 322); a blower 315 that supplies air to the interiors of the plurality of blowout nozzles 313; and a radiant heat generation device 331 having a plurality of tubes (cold / hot water radiant tubes 332) that generate heat radiation in the conditioned space 301 by allowing a refrigerant to flow therethrough. The plurality of blowout nozzles 313 are arranged side by side with gaps such that their respective blowout ports (blowout slits 322) are on the same plane, thereby forming a blowout surface 324. The guided air Q2 guided by the blowout air Q0 blown out from the blowout nozzles 313 passes through the gaps. The radiant heat generation device 331 is provided at positions on both sides with respect to the blowout direction of the blowout nozzles 313. The plurality of tubes are configured to be arranged side by side in a direction perpendicular to the blowout surface 324 in the side surfaces of the blowout nozzles 313, the refrigerant flows into the interior from one side of the two end portions of the blowout nozzles 313, turns back at the end portion on the opposite side of the blowout nozzles 313, and flows out from one side of the blowout nozzles 313, and the number of the inflow tubes for allowing the refrigerant to flow into one side of the blowout nozzles 313 is larger than the number of the outflow tubes for allowing the refrigerant to flow out from one side of the blowout nozzles.

[0382] Taking the blowout nozzle 313a as an example, regarding the tubes 332a1, 332a2, 332a3, 332a4 arranged on one side surface, the tubes 332a2, 332a3, 332a4 serving as the inflow tubes are arranged such that their number is larger than the number of the tube 332a1 serving as the outflow tube. The same applies to the tubes 332a5, 332a6, 332a7, 332a8 arranged on the opposite side surface.

[0383] According to such a structure, for example, regarding the blowout nozzle 313a, the radiant heat generation device 331 provided inside the side surface of the blowout nozzle 313a (the tubes 332a1 to 332a8 constituting the cold / hot water radiant tube 332a) exchanges heat through convective heat conduction with the air A2a flowing inside the blowout nozzle 313a, and exchanges heat through heat conduction with the side surface of the blowout nozzle 313a in contact therewith. In addition, since the radiant heat generation device 331 is divided by the plurality of tubes (cold / hot water radiant tubes 332a), the surface area can be increased, and the heat exchange with the air A2a flowing inside the blowout nozzle 313a or the blowout nozzle 313a can be promoted.

[0384] In addition, regarding the plurality of cold and hot water radiation pipes 332a that make up the radiant heat generating device 331, the temperature difference between the refrigerant flowing through and the air A2a flowing inside the blowing nozzle 313a or the blowing nozzle 313a is greater in the pipes 332a2, 332a3, 332a4 where the refrigerant flows in on one side of the blowing nozzle 313a than in the pipe 332a1 where the refrigerant flows out. Similarly, this temperature difference in the pipes 332a6, 332a7, 332a8 is greater than that in the pipe 332a5 where the refrigerant flows out.

[0385] Therefore, regarding the cold and hot water radiation pipes 332a that make up the radiant heat generating device 331, compared with the case where the number of inflow pipes through which the refrigerant flows in is less than or equal to the number of outflow pipes through which the refrigerant flows out, the number of pipes through which the refrigerant flows in is greater than the number of outflow pipes through which the refrigerant flows out, and the surface area of the inflow pipes (pipes 332a2, 332a3, 332a4, 332a6, 332a7, 332a8) with a larger temperature difference from the air A2a flowing inside the blowing nozzle 313a or the blowing nozzle 313a becomes larger, further promoting heat exchange.

[0386] On the other hand, the air (guided air Q2) attracted to the gap of the blowing nozzle 313a exchanges heat with the blowing nozzle 313a and becomes integrated with the blowing air Q0 from the blowing nozzle 313a, and thus is sent to the air-conditioned space 301 as a planar uniform flow with a low wind speed. The same applies to the blowing nozzles 313b, 313c, and 313d.

[0387] Therefore, it is possible to achieve an air conditioner that suppresses temperature deviation or air flow sensation in the entire air-conditioned space 301, and an air-conditioned space 301 without unevenness in the felt temperature. That is, it is possible to achieve a radiant air-conditioning system 400 that can improve the thermal comfort of the space.

[0388] (2) In the radiant air-conditioning system 400, the blower 315a is configured to supply air to the inside of the blowing nozzle 313a from one side (one end side) of the two end portions of the blowing nozzle 313a. According to such a structure, the air A2a flowing inside the blowing nozzle 313a, although flowing from the air flowing in from one end side that is one side of the two end portions toward the other end side, a part of it blows out from the slit-shaped air outlet (blowing slit 322) to the air-conditioned space 301. That is, the air volume of the air A2a flowing inside the blowing nozzle 313a gradually decreases as it moves from one end side toward the other end side.

[0389] In addition, the refrigerant that flows in from one end side of the blowing nozzle 313a and flows to the other end side through the tubes 332a2, 332a3, 332a4, 332a6, 332a7, 332a8 flows to the other end side while exchanging heat with the air A2a flowing inside the blowing nozzle 313a or the blowing nozzle 313a. Therefore, the temperature difference between the inflow tube (tube 332a2, 332a3, 332a4, 332a6, 332a7, 332a8) and the air A2a flowing inside the blowing nozzle 313a or the blowing nozzle 313a is greater near the one end side than near the other end side.

[0390] Therefore, by flowing a larger air volume around the inflow pipe (tubes 332a2, 332a3, 332a4, 332a6, 332a7, 332a8) having a large temperature difference with the air A2a flowing inside the blowing nozzle 313a, the heat exchange between the radiant heat generating device 331 and the blown air Q0 is promoted, and thermal comfort can be improved. The same is true for the other blowing nozzles 313b, 313c, and 313d.

[0391] (3) In the radiation air conditioning system 400, the inlet pipe (tubes 332a2, 332a3, 332a4, 332a6, 332a7, 332a8) is arranged in a direction perpendicular to the air supply surface 324 at a position closer to the blow-out port (blow-out slit 322) than the outlet pipe (tubes 332a1, 332a5).

[0392] Depending on the positional relationship with the occupants staying in the air-conditioned space 301, there is another blowing nozzle 313b between a part of the blowing nozzle 313a on the opposite side of the blowing outlet (blowing slit 322a) and the occupants, and it is possible that heat exchange based on radiation may not be performed. However, if such a structure is formed, the inlet pipe with a larger temperature difference between the refrigerant circulating inside and the air flowing inside the blowing nozzle 313a or the blowing nozzle 313a is located on the side close to the occupants, so the heat exchange is further promoted by a part of the blowing nozzle 313a on the side close to the occupants. The same is true for other blowing nozzles 313b, 313c, and 313d. Therefore, it is possible to promote heat exchange based on radiation between the blowing nozzles 313 arranged side by side and the occupants staying in the air-conditioned space 301, and to improve thermal comfort.

[0393] (4) In the radiation air conditioning system 400, regarding the blowing nozzle 313a, the tubes 332a1 to 332a8 are arranged symmetrically with respect to a plane (reference plane F) perpendicular to the air supply surface 324 and passing through the center of the blowing port (blowing slit 322).

[0394] According to such a structure, the deviation of the temperature distribution on the surface of the blowing nozzle 313a and the temperature distribution of the air A2a flowing inside the blowing nozzle 313a is suppressed, and the heat exchange efficiency is improved. In addition, the smaller the deviation of the temperature distribution, the larger the average temperature difference from the refrigerant, so the heat exchange amount increases. The same applies to the other blowing nozzles 313b, 313c, and 313d. Therefore, the thermal comfort of the air-conditioned space 301 can be improved.

[0395] (Modified example)

[0396] Next, with reference to Figures 19A to 19G , a modified example of the arrangement state of the cold and hot water radiation pipes 332 inside the blowing nozzle 313 will be described.

[0397] Figures 19A to 19G They are cross-sectional views showing modified examples of the arrangement state of the cold and hot water radiation pipes 332 inside the blowing nozzle 313.

[0398] In this specification, the cold and hot water radiation pipe 332 in which water flows in the same direction as the air flowing inside the blowing nozzle 313 is called an "inflow pipe", and the cold and hot water radiation pipe 332 in which water flows in the direction opposite to the inflow pipe is called an "outflow pipe".

[0399] A plurality of cold and hot water radiation pipes 332 are provided at positions on both sides with respect to the blowing direction of the blowing nozzle 313, and are arranged side by side in a direction perpendicular to the air supply surface 324 (refer to Figure 18 ), and it is sufficient that the number of inflow pipes is larger than the number of outflow pipes.

[0400] In addition, in the figure, the cold and hot water radiation pipes 332 are composed of 16 in total, 8 on each side, and the arrangement relationships of the inflow pipes 332x and the outflow pipes 332y in the cold and hot water radiation pipes 332 are different respectively.

[0401] Figure 19A It is a diagram showing the arrangement state of the first modified example.

[0402] In the first modified example, the cold and hot water radiation pipes 332 are arranged symmetrically about a plane (reference plane F) that passes through the center of the gap width of the blowing gap 322 and is perpendicular to the air supply surface 324 formed by a plurality of blowing gaps 322.

[0403] Specifically, the cold and hot water radiation pipes 332 are divided into a total of 10 inflow pipes 332x located on the blowing gap 322 side (lower side) and a total of 6 outflow pipes 332y located on the side opposite to the blowing gap 322 side (upper side) and arranged.

[0404] That is, it can be said that the inflow pipe 332x is arranged closer to the blowing gap 322 side than the outflow pipe 332y in the direction perpendicular to the air supply surface 324. In addition, the arrangement state in this first modification example is the same type as the arrangement state in the second embodiment in Figure 15B is the same type as the arrangement state in the second embodiment in

[0405] Figure 19B is a diagram showing the arrangement state of the second modification example.

[0406] In the second modification example, the cold and hot water radiation pipes 332 are arranged symmetrically about a plane (reference plane F) that passes through the center of the gap width of the blowing gap 322 and is perpendicular to the air supply surface 324 formed by the plurality of blowing gaps 322.

[0407] Specifically, the cold and hot water radiation pipes 332 are divided into a total of 6 inflow pipes 332x1 located on the blowing gap 322 side (lower side), a total of 4 inflow pipes 332x2 located on the side opposite to the blowing gap 322 (upper side), and a total of 6 outflow pipes 332y located between the inflow pipes 332x1 and the inflow pipes 332x2.

[0408] That is, in the second modification example, it can be said that in the direction perpendicular to the air supply surface 324, the outflow pipe 332y is arranged between the inflow pipes 332x1 and the inflow pipes 332x2.

[0409] Figure 19C is a diagram showing the arrangement state of the third modification example.

[0410] In the third modification example, the cold and hot water radiation pipes 332 are arranged symmetrically about a plane (reference plane F) that passes through the center of the gap width of the blowing gap 322 and is perpendicular to the air supply surface 324 formed by the plurality of blowing gaps 322.

[0411] And, the cold and hot water radiation pipes 332 are divided into a total of 10 inflow pipes 332x located on the side opposite to the blowing gap 322 side (upper side) and a total of 6 outflow pipes 332y located on the blowing gap 322 side (lower side).

[0412] That is, it can be said that the inflow pipe 332x is arranged closer to the side opposite to the blowing gap 322 (upper side) than the outflow pipe 332y in the direction perpendicular to the air supply surface 324.

[0413] Figure 19D is a diagram showing the arrangement state of the fourth modification example.

[0414] In the fourth modification example, the cold and hot water radiation pipes 332 are arranged such that the positions of the inflow pipe and the outflow pipe are asymmetric left and right with respect to a plane (reference plane F) that passes through the center of the gap width of the blowing gap 322 and is perpendicular to the air supply surface 324 formed by the plurality of blowing gaps 322.

[0415] Specifically, among the plurality of cold and hot water radiation pipes 332, eight cold and hot water radiation pipes 332 arranged on one side (the left side in the drawing) with respect to the blowing direction of the blowing nozzle 313 are divided into a total of five inflow pipes 332x1 located on the blowing gap 322 side (lower side) and a total of three outflow pipes 332y1 located on the side opposite to the blowing gap 322 (upper side) and arranged.

[0416] In addition, among the eight cold and hot water radiation pipes 332 arranged on the other side (the right side in the drawing) with respect to the blowing direction of the blowing nozzle 313, a total of three inflow pipes 332x2 located on the blowing gap 322 side (lower side), a total of two inflow pipes 332x3 located on the side opposite to the blowing gap 322 (upper side), and a total of three outflow pipes 332y2 located between the inflow pipe 332x2 and the inflow pipe 332x3 are divided and arranged.

[0417] That is, in the fourth modification example, the positions of the inflow pipe and the outflow pipe of the cold and hot water radiation pipes 332 are arranged asymmetrically left and right with respect to the reference plane F. It can also be said that the arrangement relationship between the inflow pipe 332x1 and the inflow pipes 332x2, 332x3 in the cold and hot water radiation pipes 332 is arranged asymmetrically with respect to the reference plane F.

[0418] Figure 19E It is a diagram showing the arrangement state of the fifth modification example.

[0419] In the fifth modification example, the cold and hot water radiation pipes 332 are arranged such that the number of the inflow pipe and the outflow pipe is asymmetric left and right with respect to a plane (reference plane F) that passes through the center of the gap width of the blowing gap 322 and is perpendicular to the air supply surface 324 formed by the plurality of blowing gaps 322.

[0420] Specifically, among the plurality of cold and hot water radiation pipes 332, eight cold and hot water radiation pipes 332 arranged on one side (the left side in the drawing) with respect to the blowing direction of the blowing nozzle 313 are divided into a total of six inflow pipes 332x1 located on the blowing gap 322 side (lower side) and a total of two outflow pipes 332y1 located on the side opposite to the blowing gap 322 (upper side) and arranged.

[0421] In addition, eight cold and hot water radiation pipes 332 disposed on the other side (the right side in the drawing) with respect to the blowing direction of the blowing nozzle 313 are divided into a total of five inflow pipes 332x2 located on the side of the blowing slit 322 (the lower side) and a total of three outflow pipes 332y2 located on the side opposite to the blowing slit 322 (the upper side) and are disposed.

[0422] That is, in the fifth modification example, the number of the inflow pipes and the outflow pipes of the cold and hot water radiation pipes 332 is arranged asymmetrically left and right with respect to the reference plane F. It can also be said that the number of the inflow pipes 332x1 disposed on one side (the left side in the drawing) with respect to the blowing direction of the blowing nozzle 313 and the number of the inflow pipes 332x2 disposed on the other side (the right side in the drawing) with respect to the blowing direction of the blowing nozzle 313 are arranged in a different manner.

[0423] Figure 19F It is a diagram showing the arrangement state of the sixth modification example.

[0424] In the sixth modification example, among the cold and hot water radiation pipes 332 Figure 19A in the arrangement state of the inflow pipes 332x and the outflow pipes 332y (the positional relationship in the up and down direction between the inflow pipes and the outflow pipes is symmetric left and right), the overall positions of the eight cold and hot water radiation pipes 332 disposed on one side (the left side in the drawing) with respect to the blowing direction of the blowing nozzle 313 and the overall positions of the eight cold and hot water radiation pipes 332 disposed on the other side (the right side in the drawing) with respect to the blowing direction of the blowing nozzle 313 are arranged asymmetrically left and right.

[0425] Specifically, the eight cold and hot water radiation pipes 332 disposed on the left side among the plurality of cold and hot water radiation pipes 332 are divided into a total of five inflow pipes 332x1 located on the side of the blowing slit 322 (the lower side) and a total of three outflow pipes 332y1 located on the side opposite to the blowing slit 322 (the upper side) and are disposed.

[0426] In addition, the eight cold and hot water radiation pipes 332 disposed on the right side are divided into a total of five inflow pipes 332x2 located on the side of the blowing slit 322 (the lower side) and a total of three outflow pipes 332y2 located on the side opposite to the blowing slit 322 (the upper side) and are disposed.

[0427] Moreover, the inflow pipe 332x1a located on the left side among the plurality of cold and hot water radiation pipes 332 and closest to the blowing slit 322 (the lower side) is arranged to be farther from the blowing slit 322 (the upper side) than the inflow pipe 332x2a located on the right side among the plurality of cold and hot water radiation pipes 332 and closest to the blowing slit 322 (the lower side).

[0428] That is, in the sixth modification, the hot and cold water radiant pipes 332 are arranged symmetrically with respect to the left - right position relationship in the up - down direction of the inflow pipe and the outflow pipe with reference to the reference plane F, and the whole of the hot and cold water radiant pipes 332 on the left side and the whole of the hot and cold water radiant pipes 332 on the right side are arranged asymmetrically with respect to the left - right direction.

[0429] Figure 19G It is a diagram showing the arrangement state of the seventh modification.

[0430] In the seventh modification, the hot and cold water radiant pipes 332 are arranged symmetrically with respect to the left - right direction with reference to a plane (reference plane F) that passes through the center of the gap width of the blowing gap 322 and is perpendicular to the air - supply surface 324 formed by a plurality of blowing gaps 322.

[0431] Specifically, the hot and cold water radiant pipes 332 are divided into a total of 6 inflow pipes 332x1 located on the blowing - gap 322 side (lower side), a total of 2 outflow pipes 332y2 located on the side opposite to the blowing gap 322 (upper side), a total of 6 inflow pipes 332x2 located between the inflow pipes 332x1 and the outflow pipes 332y2, and a total of 2 outflow pipes 332y1 located between the inflow pipes 332x1 and the inflow pipes 332x2 and are arranged.

[0432] That is, the hot and cold water radiant pipes 332 are arranged in sequence with the inflow pipes 332x1, the outflow pipes 332y1, the inflow pipes 332x2, and the outflow pipes 332y2 starting from the blowing - gap 322 side. That is, in the seventh modification, the hot and cold water radiant pipes 332 are arranged such that the inflow pipes 332x1 and the inflow pipes 332x2, and the outflow pipes 332y1 and the outflow pipes 332y2 are not adjacent to each other in the direction perpendicular to the air - supply surface.

[0433] As described above, even if the hot and cold water radiant pipes 332 are set to the arrangement states of the first to seventh modifications, at least the same effects as the effect (1) can be achieved.

[0434] The present invention has been described based on the embodiments. Those skilled in the art can understand that these embodiments are illustrative, and various combinations of the constituent elements or the processing steps can be variously modified, and such modifications are also within the scope of the present invention.

[0435] For example, in the radiant air-conditioning system 400 of the second embodiment, the air supply device 311 is disposed offset from the ceiling surface constituting the conditioned space 301, and the blown air Q0 from the plurality of blowout nozzles 313 is supplied in the direction from the ceiling surface toward the ground, but it is not limited thereto. For example, the air supply device 311 may be disposed offset from the side wall surface of the conditioned space 301, and configured such that the blown air Q0 from the plurality of blowout nozzles 313 is supplied toward the opposite side wall surface. Thus, the induced air Q1 can also be widely sucked from the guiding space 302 between the side wall surface and the plurality of blowout nozzles 313, and stable air supply toward the opposite side wall surface can be achieved.

[0436] In addition, in the radiant air-conditioning system 400 of the second embodiment, the tube group disposed inside the blowout nozzle 313 is composed of eight tubes, but it is not limited thereto. As long as at least each tube is connected to the water supply pipe 333 and the drain pipe 334, and the number of tubes branched inside the air guiding member is six or more, for example, the number of tubes constituting the tube group may be six, twelve, etc., or may be sixteen as in the first to seventh modification examples.

[0437] (Supplementary Note)

[0438] The outline of one aspect of the present invention is described as follows.

[0439] (Item 1)

[0440] A radiant air-conditioning system, characterized by comprising: a plurality of blowout nozzles having slit-shaped blowout ports;

[0441] a blower that supplies air to the plurality of blowout nozzles;

[0442] a radiant heat generation unit having a plurality of tubes that generate heat radiation to the conditioned space by allowing a refrigerant to pass therethrough;

[0443] the plurality of blowout nozzles are arranged side by side with gaps in such a manner that their respective blowout ports are located on the same plane to form an air supply surface;

[0444] induced air guided by the blown air supplied from the plurality of blowout nozzles passes through the gaps;

[0445] the plurality of tubes constituting the radiant heat generation unit are disposed at positions on both sides with respect to the blowing direction of each of the plurality of blowout nozzles;

[0446] The plurality of tubes are configured such that they are arranged side by side in a direction perpendicular to the air supply surface on each of the side surfaces of the plurality of blowing nozzles. Refrigerant flows into the interior from one side of each of the two end portions of the plurality of blowing nozzles, turns back at the end portion on the other side of each of the plurality of blowing nozzles, and flows out from the one side of each of the plurality of blowing nozzles. The number of inflow pipes for supplying the refrigerant to the one side of each of the plurality of blowing nozzles is larger than the number of outflow pipes for discharging the refrigerant from the one side of each of the plurality of blowing nozzles.

[0447] (Item 2)

[0448] In the radiant air-conditioning system according to Item 1, the blower conveys air from the one side of each of the two end portions of the plurality of blowing nozzles into the interior of the plurality of blowing nozzles.

[0449] (Item 3)

[0450] In the radiant air-conditioning system according to Item 1 or Item 2, the inflow pipes are arranged on the side closer to the air outlet than the outflow pipes in a direction perpendicular to the air supply surface.

[0451] (Item 4)

[0452] In the radiant air-conditioning system according to Item 3, the plurality of tubes are symmetrically arranged with respect to a plane perpendicular to the air supply surface and passing through the center of the air outlet.

[0453] Industrial applicability

[0454] The radiant air-conditioning system of the present invention is useful as a system capable of improving the thermal comfort in the conditioned space.

[0455] Explanation of reference numerals

[0456] 100 Radiant air-conditioning system

[0457] 100a Radiant air-conditioning system

[0458] 100b Radiant air-conditioning system

[0459] 1 Conditioned space

[0460] 2 Guide space

[0461] 11 Air supply device

[0462] 12, 12a, 12b Air supply units

[0463] 13, 13a, 13b, 13c, 13d Blowing nozzles

[0464] 113, 113a, 113b, 113c, 113d blowing nozzles

[0465] 213, 213a, 213b, 213c, 213d blowing nozzles

[0466] 14 blower box

[0467] 15, 15a, 15b blowers

[0468] 16a, 16b impellers

[0469] 17a, 17b motors

[0470] 18, 18a, 18b air supply chambers

[0471] 19 control unit

[0472] 21 suction port

[0473] 22, 22a, 22b, 22c, 22d blowing slits

[0474] 122, 122a, 122b, 122c, 122d blowing slits

[0475] 222, 222a, 222b, 222c, 222d blowing slits

[0476] 23, 23a, 23b blower outlets

[0477] 123, 123a, 123b, 123c, 123d air supply ducts

[0478] 31 radiant heat generating device

[0479] 32, 32a, 32b, 32c, 32d cold and hot water radiant tubes

[0480] 132, 132a, 132b, 132c, 132d cold and hot water radiant tubes

[0481] 232, 232a, 232b, 232c, 232d cold and hot water radiant tubes

[0482] 32a1, 32a2, 32a3, 32a4, 32a5, 32a6, 32a7, 32a8 tubes

[0483] 132a1, 132a2, 132a3, 132a4, 132a5, 132a6, 132a7, 132a8 tubes 232a1, 232a2, 232a3, 232a4, 232a5, 232a6, 232a7, 232a8 tubes 32b1, 32b2, 32b3, 32b4, 32b5, 32b6, 32b7, 32b8 tubes

[0484] Tubes 32c1, 32c2, 32c3, 32c4, 32c5, 32c6, 32c7, 32c8

[0485] Tubes 32d1, 32d2, 32d3, 32d4, 32d5, 32d6, 32d7, 32d8

[0486] Water supply pipe 33

[0487] Drain pipe 34

[0488] Cooler 35 for generating cold and hot water

[0489] Refrigerant coil 35a

[0490] Water supply pump 36

[0491] Outdoor unit 42

[0492] Compressor 42a

[0493] Expander 42b

[0494] Outdoor heat exchanger 42c

[0495] Air supply fan 42d

[0496] Four-way valve 42e

[0497] Refrigerant circuit 43

[0498] Heat pump 44

[0499] Return pipe 45a1

[0500] Return pipe 45a2

[0501] Set temperature input section 51

[0502] Temperature detection section 52

[0503] Inhaled air A0

[0504] Nozzle air A3a, A3b, A3c, A3d

[0505] Blown air Q0

[0506] Guided air Q1

[0507] Guided air Q2

[0508] Steps S01 - S08, Radiant air conditioning system 400

[0509] Air-conditioned space 301

[0510] Guided space 302

[0511] 311 Air supply device

[0512] 312, 312a, 312b Air supply units

[0513] 313, 313a, 313b, 313c, 313d Blowing nozzles

[0514] 314, 314a, 314b Fan boxes

[0515] 315, 315a, 315b Fans

[0516] 316a, 316b Impellers

[0517] 317a, 317b Electric motors

[0518] 318a, 318b Air supply chambers

[0519] 319a, 319b Partition walls

[0520] 321a, 321b Suction inlets

[0521] 322, 322a, 322b, 322c, 322d Blowing slits

[0522] 323a, 323b Fan outlets

[0523] 324 Air supply surface

[0524] 331 Radiation heat generating device

[0525] 332, 332a, 332b, 332c, 332d Cold and hot water radiation pipes 332a1, 332a2, 332a3, 332a4, 332a5, 332a6, 332a7, 332a8 Pipes 332x, 332x1, 332x2, 332x3, 332x1a, 332x2a Inflow pipes

[0526] 332y, 332y1, 332y2, 332y3 Outflow pipes

[0527] 333 Water supply pipe

[0528] 334 Drain pipe

[0529] 335 Cold and hot water generating cooler

[0530] 335a Refrigerant coil

[0531] 336 Water supply pump

[0532] 342 Outdoor unit

[0533] 342a Compressor

[0534] 342b Expander

[0535] 342c Outdoor Heat Exchanger

[0536] 342d Air Supply Fan

[0537] 342e Four-way Valve

[0538] 343 Refrigerant Circuit

[0539] 344 Heat Pump

[0540] A0a, A0b Inlet Air

[0541] A1a, A1b Air

[0542] A2a, A2b, A2c, A2d Air

[0543] F Reference Plane.

Claims

1. A radiation air-conditioning system, characterized in that, Comprising: A plurality of blowing nozzles having slit-shaped air outlets; A blower for supplying air to the plurality of blowing nozzles; A radiant heat generating unit having a plurality of tubes that generate heat radiation to the air-conditioned space by circulating water inside; And A control unit for controlling the blower, The plurality of blowing nozzles are arranged side by side with gaps in such a way that their respective air outlets are located on the same plane, The guiding air guided by the blown air delivered from the plurality of blowing nozzles passes through the gaps, Each of the plurality of tubes is capable of generating heat transfer between them and the guiding air, When the control unit controls the temperature of the water flowing through the plurality of tubes under specified conditions, based on the air-conditioning capacity determined within the adjustable air volume range of the blower, it controls the air volume of the blown air to approach the set temperature set for the air-conditioned space.

2. The radiant air-conditioning system according to claim 1, wherein, Further comprising: A set temperature input unit for inputting the set temperature; And A temperature detection unit for detecting the temperature of the air-conditioned space, The control unit controls the air volume of the blown air so that the temperature difference between the set temperature input to the set temperature input unit and the temperature detected by the temperature detection unit is within the range of the reference value.

3. The radiant air-conditioning system according to claim 1, wherein: The specified condition is a temperature condition that is higher than the temperature of the water that causes condensation on the surface of the radiation surface formed by the plurality of tubes by a specified temperature.

4. The radiant air-conditioning system according to claim 1, wherein: The plurality of tubes are arranged in contact with the outer sides of the side members constituting each of the plurality of blowing nozzles.

5. The radiant air-conditioning system according to claim 1, wherein: The plurality of tubes are arranged in contact with the inner sides of the side members constituting each of the plurality of blowing nozzles.

6. The radiant air-conditioning system according to claim 1, wherein: The plurality of tubes are built into the side members constituting each of the plurality of blowing nozzles.

7. The radiant air-conditioning system according to claim 1, wherein: The plurality of tubes are arranged on the same plane on the downstream side of the surface formed by the air outlets of the plurality of blowing nozzles with respect to the flow of the blown air.

8. The radiant air-conditioning system according to claim 1, wherein: The plurality of tubes are arranged in the space of the gap formed between the plurality of blowing nozzles.

9. The radiant air-conditioning system according to claim 1, wherein: The plurality of blowing nozzles are arranged offset in such a way that there is a specified guiding space with respect to the ceiling surface or side wall surface of the air-conditioned space.

10. The radiant air-conditioning system according to claim 1, wherein: Each of the plurality of blowing nozzles is made of aluminum.

11. The radiant air-conditioning system according to claim 1, wherein: Each of the plurality of blowing nozzles is made of resin.

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